diff --git a/sample/Assets/Scripts/Marketplace/BridgeScript.cs b/sample/Assets/Scripts/Marketplace/BridgeScript.cs
index fe6bdc470..1d75b310b 100644
--- a/sample/Assets/Scripts/Marketplace/BridgeScript.cs
+++ b/sample/Assets/Scripts/Marketplace/BridgeScript.cs
@@ -27,10 +27,13 @@ public void OpenWidget()
 
         var link = LinkFactory.GenerateBridgeLink(
             environment: environment,
-            fromTokenAddress: FromTokenAddress.text.IsNullOrEmpty() ? null : FromTokenAddress.text,
-            fromChainID: FromChain.text.IsNullOrEmpty() ? null : FromChain.text,
-            toTokenAddress: ToTokenAddress.text.IsNullOrEmpty() ? null : ToTokenAddress.text,
-            toChainID: ToChain.text.IsNullOrEmpty() ? null : ToChain.text
+            queryParams: new BridgeQueryParams
+            {
+                FromTokenAddress = FromTokenAddress.text.IsNullOrEmpty() ? null : FromTokenAddress.text,
+                FromChainID = FromChain.text.IsNullOrEmpty() ? null : FromChain.text,
+                ToTokenAddress = ToTokenAddress.text.IsNullOrEmpty() ? null : ToTokenAddress.text,
+                ToChainID = ToChain.text.IsNullOrEmpty() ? null : ToChain.text
+            }
         );
 
         Application.OpenURL(link);
diff --git a/sample/Assets/Scripts/Marketplace/OnRampScript.cs b/sample/Assets/Scripts/Marketplace/OnRampScript.cs
index cb6e24435..54886cccb 100644
--- a/sample/Assets/Scripts/Marketplace/OnRampScript.cs
+++ b/sample/Assets/Scripts/Marketplace/OnRampScript.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using AltWebSocketSharp;
 using Immutable.Marketplace;
 using UnityEngine;
@@ -49,11 +50,17 @@ public void OpenWidget()
         var link = LinkFactory.GenerateOnRampLink(
             environment: environment,
             email: email,
-            address: walletAddress,
-            fiatCurrency: FiatCurrencyInput.text.IsNullOrEmpty() ? "USD" : FiatCurrencyInput.text,
-            fiatAmount: FiatAmountInput.text.IsNullOrEmpty() ? "50" : FiatAmountInput.text,
-            cryptoCurrency: CryptoCurrency.text.IsNullOrEmpty() ? "IMX" : CryptoCurrency.text,
-            cryptoCurrencyList: CryptoCurrencyList.text.IsNullOrEmpty() ? "imx,eth,usdc" : CryptoCurrencyList.text
+            walletAddress: walletAddress,
+            queryParams: new OnRampQueryParams
+            {
+                DefaultFiatCurrency = FiatCurrencyInput.text.IsNullOrEmpty() ? "USD" : FiatCurrencyInput.text,
+                DefaultFiatAmount = FiatAmountInput.text.IsNullOrEmpty() ? "50" : FiatAmountInput.text,
+                DefaultCryptoCurrency = CryptoCurrency.text.IsNullOrEmpty() ? "IMX" : CryptoCurrency.text,
+                CryptoCurrencyList = CryptoCurrencyList.text.IsNullOrEmpty() ? "imx,eth,usdc" : CryptoCurrencyList.text
+            },
+            extraQueryParams: new Dictionary<string, string> {
+                {"themeColor", "000000"}
+            }
         );
 
         Application.OpenURL(link);
@@ -66,5 +73,4 @@ public void Cancel()
     {
         SceneManager.LoadScene("MarketplaceScene");
     }
-
-}
+}
\ No newline at end of file
diff --git a/sample/Assets/Scripts/Marketplace/SwapScript.cs b/sample/Assets/Scripts/Marketplace/SwapScript.cs
index 5fc6f3ed0..321f53375 100644
--- a/sample/Assets/Scripts/Marketplace/SwapScript.cs
+++ b/sample/Assets/Scripts/Marketplace/SwapScript.cs
@@ -44,8 +44,11 @@ public void OpenWidget()
         var link = LinkFactory.GenerateSwapLink(
             environment: environment,
             publishableKey: publishableKey,
-            fromTokenAddress: FromTokenAddress.text.IsNullOrEmpty() ? null : FromTokenAddress.text,
-            toTokenAddress: ToTokenAddress.text.IsNullOrEmpty() ? null : ToTokenAddress.text
+            queryParams: new SwapQueryParams
+            {
+                FromTokenAddress = FromTokenAddress.text.IsNullOrEmpty() ? null : FromTokenAddress.text,
+                ToTokenAddress = ToTokenAddress.text.IsNullOrEmpty() ? null : ToTokenAddress.text
+            }
         );
 
         Application.OpenURL(link);
diff --git a/src/Packages/Marketplace/Runtime/LinkFactory.cs b/src/Packages/Marketplace/Runtime/LinkFactory.cs
index b6629e171..e65ae34df 100644
--- a/src/Packages/Marketplace/Runtime/LinkFactory.cs
+++ b/src/Packages/Marketplace/Runtime/LinkFactory.cs
@@ -11,45 +11,97 @@ public class LinkFactory
         /// </summary>
         /// <param name="environment">Specifies the environment (<c>Sandbox</c> or <c>Production</c>).</param>
         /// <param name="email">The user's email address, pre-filled in the on-ramp flow.</param>
-        /// <param name="address">The user's wallet address, where tokens will be sent.</param>
-        /// <param name="fiatCurrency">The fiat currency to use (default: "USD").</param>
-        /// <param name="fiatAmount">The amount of fiat currency to spend when purchasing cryptocurrency (default: "50").</param>
-        /// <param name="cryptoCurrency">The cryptocurrency to purchase (default: "IMX").</param>
-        /// <param name="cryptoCurrencyList">A comma-separated list of available cryptocurrencies for purchase (default: "imx,eth,usdc").</param>
+        /// <param name="walletAddress">The user's wallet address, where tokens will be sent.</param>
+        /// <param name="queryParams">The query parameters for the on-ramp flow. Uses default values if not specified.</param>
+        /// <param name="extraQueryParams">Optional additional query parameters. See <a href="https://docs.transak.com/docs/query-parameters">Transak docs</a> for possible fields.</param>
         /// <returns>The generated on-ramp URL.</returns>
+        /// <remarks>
+        /// If <paramref name="extraQueryParams"/> includes any fields that are already defined in <paramref name="queryParams"/>, 
+        /// the values in <paramref name="queryParams"/> will take precedence. 
+        /// For example, if <paramref name="extraQueryParams"/> contains "defaultFiatAmount", it will be ignored and the value 
+        /// from <paramref name="queryParams.DefaultFiatAmount"/> will be used instead.
+        /// </remarks>
         public static string GenerateOnRampLink(
             Environment environment,
             string email,
-            string address,
-            string fiatCurrency = "USD",
-            string fiatAmount = "50",
-            string cryptoCurrency = "IMX",
-            string cryptoCurrencyList = "imx,eth,usdc"
+            string walletAddress,
+            OnRampQueryParams queryParams = default,
+            Dictionary<string, string>? extraQueryParams = null
         )
         {
             var baseUrl = LinkConfig.GetBaseUrl(environment, Flow.OnRamp);
             var apiKey = LinkConfig.GetApiKey(environment, Flow.OnRamp);
 
-            var queryParams = new Dictionary<string, string>
+            var queryParamsDictionary = new Dictionary<string, string>
             {
-                {"apiKey", apiKey},
-                {"network", "immutablezkevm"},
-                {"defaultPaymentMethod", "credit_debit_card"},
-                {"disablePaymentMethods", ""},
-                {"productsAvailed", "buy"},
-                {"exchangeScreenTitle", "Buy"},
-                {"themeColor", "0D0D0D"},
-                {"defaultCryptoCurrency", cryptoCurrency},
-                {"email", Uri.EscapeDataString(email)},
-                {"isAutoFillUserData", "true"},
-                {"disableWalletAddressForm", "true"},
-                {"defaultFiatAmount", fiatAmount},
-                {"defaultFiatCurrency", fiatCurrency},
-                {"walletAddress", address},
-                {"cryptoCurrencyList", cryptoCurrencyList}
+                { "apiKey", apiKey },
+                { "cryptoCurrencyList", queryParams.CryptoCurrencyList },
+                { "defaultCryptoCurrency", queryParams.DefaultCryptoCurrency },
+                { "defaultFiatAmount", queryParams.DefaultFiatAmount },
+                { "defaultFiatCurrency", queryParams.DefaultFiatCurrency },
+                {
+                    "defaultPaymentMethod",
+                    extraQueryParams != null &&
+                    extraQueryParams.TryGetValue("defaultPaymentMethod", out var defaultPaymentMethod)
+                        ? defaultPaymentMethod
+                        : "credit_debit_card"
+                },
+                {
+                    "disablePaymentMethods",
+                    extraQueryParams != null &&
+                    extraQueryParams.TryGetValue("disablePaymentMethods", out var disablePaymentMethods)
+                        ? disablePaymentMethods
+                        : ""
+                },
+                {
+                    "disableWalletAddressForm",
+                    extraQueryParams != null &&
+                    extraQueryParams.TryGetValue("disableWalletAddressForm", out var disableWalletAddressForm)
+                        ? disableWalletAddressForm
+                        : "true"
+                },
+                { "email", Uri.EscapeDataString(email) },
+                {
+                    "exchangeScreenTitle",
+                    extraQueryParams != null &&
+                    extraQueryParams.TryGetValue("exchangeScreenTitle", out var exchangeScreenTitle)
+                        ? exchangeScreenTitle
+                        : "Buy"
+                },
+                {
+                    "isAutoFillUserData",
+                    extraQueryParams != null &&
+                    extraQueryParams.TryGetValue("isAutoFillUserData", out var isAutoFillUserData)
+                        ? isAutoFillUserData
+                        : "true"
+                },
+                { "network", "immutablezkevm" },
+                { "productsAvailed", "buy" },
+                {
+                    "themeColor",
+                    extraQueryParams != null && extraQueryParams.TryGetValue("themeColor", out var themeColor)
+                        ? themeColor
+                        : "0D0D0D"
+                },
+                { "walletAddress", walletAddress }
             };
 
-            var queryString = string.Join("&", queryParams.Select(kvp => $"{kvp.Key}={Uri.EscapeDataString(kvp.Value)}").ToArray());
+
+            // Add any extra parameters that are not already in the queryParamsDictionary
+            if (extraQueryParams != null)
+            {
+                foreach (var kvp in extraQueryParams)
+                {
+                    // Add to dictionary only if the key is not already in the dictionary
+                    if (!queryParamsDictionary.ContainsKey(kvp.Key))
+                    {
+                        queryParamsDictionary[kvp.Key] = kvp.Value;
+                    }
+                }
+            }
+
+            var queryString = string.Join("&",
+                queryParamsDictionary.Select(kvp => $"{kvp.Key}={Uri.EscapeDataString(kvp.Value)}").ToArray());
             return $"{baseUrl}?{queryString}";
         }
 
@@ -58,34 +110,29 @@ public static string GenerateOnRampLink(
         /// </summary>
         /// <param name="environment">Specifies the environment (<c>Sandbox</c> or <c>Production</c>).</param>
         /// <param name="publishableKey">The publishable key obtained from <a href="https://hub.immutable.com/">Immutable Hub</a>. See <a href="https://docs.immutable.com/api/zkEVM/apikeys">API keys</a> for more details.</param>
-        /// <param name="fromTokenAddress">The address of the token being swapped from (default is null).</param>
-        /// <param name="toTokenAddress">The address of the token being swapped to (default is null).</param>
-        /// <returns>A swap URL</returns>
+        /// <param name="queryParams">The query parameters for the swap flow. Uses default values if not specified.</param>
+        /// <returns>The generated swap URL.</returns>
         public static string GenerateSwapLink(
             Environment environment,
             string publishableKey,
-            string? fromTokenAddress = null,
-            string? toTokenAddress = null
+            SwapQueryParams queryParams = default
         )
         {
             var baseUrl = LinkConfig.GetBaseUrl(environment, Flow.Swap);
 
-            var queryParams = new Dictionary<string, string>
+            var queryParamsDictionary = new Dictionary<string, string>
             {
-                {"publishableKey", publishableKey}
+                { "publishableKey", publishableKey }
             };
 
-            if (!string.IsNullOrEmpty(fromTokenAddress))
-            {
-                queryParams["fromTokenAddress"] = fromTokenAddress;
-            }
+            if (!string.IsNullOrEmpty(queryParams.FromTokenAddress))
+                queryParamsDictionary["fromTokenAddress"] = queryParams.FromTokenAddress;
 
-            if (!string.IsNullOrEmpty(toTokenAddress))
-            {
-                queryParams["toTokenAddress"] = toTokenAddress;
-            }
+            if (!string.IsNullOrEmpty(queryParams.ToTokenAddress))
+                queryParamsDictionary["toTokenAddress"] = queryParams.ToTokenAddress;
 
-            var queryString = string.Join("&", queryParams.Select(kvp => $"{kvp.Key}={Uri.EscapeDataString(kvp.Value)}").ToArray());
+            var queryString = string.Join("&",
+                queryParamsDictionary.Select(kvp => $"{kvp.Key}={Uri.EscapeDataString(kvp.Value)}").ToArray());
             return $"{baseUrl}?{queryString}";
         }
 
@@ -93,36 +140,31 @@ public static string GenerateSwapLink(
         /// Generates a link for the bridge flow.
         /// </summary>
         /// <param name="environment">Specifies the environment (<c>Sandbox</c> or <c>Production</c>).</param>
-        /// <param name="fromTokenAddress">The address of the token being moved from (default is null).</param>
-        /// <param name="fromChainID">The ID of the source blockchain (default is null).</param>
-        /// <param name="toTokenAddress">The address of the token being moved to (default is null).</param>
-        /// <param name="toChainID">The ID of the destination blockchain (default is null).</param>
-        /// <returns>A bridge URL.</returns>
+        /// <param name="queryParams">The query parameters for the bridge flow. Uses default values if not specified.</param>
+        /// <returns>The generated bridge URL.</returns>
         public static string GenerateBridgeLink(
             Environment environment,
-            string? fromTokenAddress = null,
-            string? fromChainID = null,
-            string? toTokenAddress = null,
-            string? toChainID = null
+            BridgeQueryParams queryParams = default
         )
         {
             var baseUrl = LinkConfig.GetBaseUrl(environment, Flow.Bridge);
 
-            var queryParams = new Dictionary<string, string>();
+            var queryParamsDictionary = new Dictionary<string, string>();
 
-            if (!string.IsNullOrEmpty(fromTokenAddress))
-                queryParams["fromToken"] = fromTokenAddress.ToLower();
+            if (!string.IsNullOrEmpty(queryParams.FromChainID))
+                queryParamsDictionary["fromChain"] = queryParams.FromChainID;
 
-            if (!string.IsNullOrEmpty(fromChainID))
-                queryParams["fromChain"] = fromChainID;
+            if (!string.IsNullOrEmpty(queryParams.FromTokenAddress))
+                queryParamsDictionary["fromToken"] = queryParams.FromTokenAddress.ToLower();
 
-            if (!string.IsNullOrEmpty(toTokenAddress))
-                queryParams["toToken"] = toTokenAddress.ToLower();
+            if (!string.IsNullOrEmpty(queryParams.ToChainID))
+                queryParamsDictionary["toChain"] = queryParams.ToChainID;
 
-            if (!string.IsNullOrEmpty(toChainID))
-                queryParams["toChain"] = toChainID;
+            if (!string.IsNullOrEmpty(queryParams.ToTokenAddress))
+                queryParamsDictionary["toToken"] = queryParams.ToTokenAddress.ToLower();
 
-            var queryString = string.Join("&", queryParams.Select(kvp => $"{kvp.Key}={Uri.EscapeDataString(kvp.Value)}").ToArray());
+            var queryString = string.Join("&",
+                queryParamsDictionary.Select(kvp => $"{kvp.Key}={Uri.EscapeDataString(kvp.Value)}").ToArray());
             return $"{baseUrl}?{queryString}";
         }
     }
diff --git a/src/Packages/Marketplace/Runtime/LinkQueryParams.cs b/src/Packages/Marketplace/Runtime/LinkQueryParams.cs
new file mode 100644
index 000000000..04217aa8f
--- /dev/null
+++ b/src/Packages/Marketplace/Runtime/LinkQueryParams.cs
@@ -0,0 +1,70 @@
+namespace Immutable.Marketplace
+{
+    /// <summary>
+    /// Represents the query parameters for generating an on-ramp URL.
+    /// </summary>
+    public struct OnRampQueryParams
+    {
+        /// <summary>
+        /// The cryptocurrency to purchase (default: "IMX").
+        /// </summary>
+        public string DefaultCryptoCurrency { get; set; }
+
+        /// <summary>
+        /// The amount of fiat currency to spend when purchasing cryptocurrency (default: "50").
+        /// </summary>
+        public string DefaultFiatAmount { get; set; }
+
+        /// <summary>
+        /// The fiat currency to use (default: "USD").
+        /// </summary>
+        public string DefaultFiatCurrency { get; set; }
+
+        /// <summary>
+        /// A comma-separated list of available cryptocurrencies for purchase (default: "imx,eth,usdc").
+        /// </summary>
+        public string CryptoCurrencyList { get; set; }
+    }
+
+    /// <summary>
+    /// Represents the query parameters for generating a swap URL.
+    /// </summary>
+    public struct SwapQueryParams
+    {
+        /// <summary>
+        /// The address of the token being swapped from (default is null).
+        /// </summary>
+        public string? FromTokenAddress { get; set; }
+
+        /// <summary>
+        /// The address of the token being swapped to (default is null).
+        /// </summary>
+        public string? ToTokenAddress { get; set; }
+    }
+
+    /// <summary>
+    /// Represents the query parameters for generating a bridge URL.
+    /// </summary>
+    public struct BridgeQueryParams
+    {
+        /// <summary>
+        /// The ID of the source blockchain (default is null).
+        /// </summary>
+        public string? FromChainID { get; set; }
+
+        /// <summary>
+        /// The address of the token being moved from (default is null).
+        /// </summary>
+        public string? FromTokenAddress { get; set; }
+
+        /// <summary>
+        /// The ID of the destination blockchain (default is null).
+        /// </summary>
+        public string? ToChainID { get; set; }
+
+        /// <summary>
+        /// The address of the token being moved to (default is null).
+        /// </summary>
+        public string? ToTokenAddress { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/src/Packages/Marketplace/Runtime/LinkQueryParams.cs.meta b/src/Packages/Marketplace/Runtime/LinkQueryParams.cs.meta
new file mode 100644
index 000000000..31621b30b
--- /dev/null
+++ b/src/Packages/Marketplace/Runtime/LinkQueryParams.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: a3d4658a7ab84ad8b8b6d9cfa89b6205
+timeCreated: 1738042715
\ No newline at end of file