diff --git a/app/build.gradle b/app/build.gradle
deleted file mode 100755
index a6f4469..0000000
--- a/app/build.gradle
+++ /dev/null
@@ -1,39 +0,0 @@
-apply plugin: 'com.android.application'
-
-android {
-    namespace "com.hyperling.apps.games"
-    compileSdkVersion 37
-    defaultConfig {
-        applicationId "apps.hyperling.com.platformer"
-        minSdkVersion 14
-        targetSdkVersion 37
-        versionCode 13
-        versionName "0.1.0"
-        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-    }
-    buildTypes {
-        release {
-            minifyEnabled true
-            shrinkResources true
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
-        }
-    }
-}
-
-dependencies {
-    /*
-    compile fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    compile 'com.android.support:appcompat-v7:24.2.1'
-    testCompile 'junit:junit:4.12'
-    */
-
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-    androidTestImplementation('com.android.support.test.espresso:espresso-core:2.2.2', {
-        exclude group: 'com.android.support', module: 'support-annotations'
-    })
-    // https://mvnrepository.com/artifact/com.android.support/appcompat-v7
-    implementation group: 'com.android.support', name: 'appcompat-v7', version: '28.0.0'
-}
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
new file mode 100644
index 0000000..459ca7a
--- /dev/null
+++ b/app/build.gradle.kts
@@ -0,0 +1,50 @@
+plugins {
+    alias(libs.plugins.androidApplication)
+}
+
+android {
+    namespace = "com.hyperling.apps.games"
+    compileSdk = 37
+
+    defaultConfig {
+        applicationId = "apps.hyperling.com.platformer"
+        minSdk = 14
+        targetSdk = 37
+        versionCode = 13
+        versionName = "0.1.0"
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
+    }
+
+    kotlin {
+        compilerOptions {
+            jvmTarget.set(org.jetbrains.kotlin.gradle.dsl.JvmTarget.JVM_17)
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = true
+            isShrinkResources = true
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+            ndk {
+                abiFilters += listOf("arm64-v8a")
+            }
+        }
+    }
+}
+
+dependencies {
+    implementation(libs.androidx.appcompat)
+    
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.junit.ext)
+    androidTestImplementation(libs.espresso.core)
+}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 3e8e2a4..021c7fd 100755
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,8 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
-    <!-- Include required permissions for Google Mobile Ads to run. -->
-    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-sdk android:minSdkVersion="21" />    <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 
     <application
diff --git a/app/src/main/java/com/hyperling/apps/games/GameActivity.java b/app/src/main/java/com/hyperling/apps/games/GameActivity.java
index 96edaa1..7b6c796 100755
--- a/app/src/main/java/com/hyperling/apps/games/GameActivity.java
+++ b/app/src/main/java/com/hyperling/apps/games/GameActivity.java
@@ -1,7 +1,7 @@
 package com.hyperling.apps.games;
 
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.Window;
 import android.view.WindowManager;
 
diff --git a/app/src/main/java/com/hyperling/apps/games/HighScoreActivity.java b/app/src/main/java/com/hyperling/apps/games/HighScoreActivity.java
index ae90619..91167cb 100755
--- a/app/src/main/java/com/hyperling/apps/games/HighScoreActivity.java
+++ b/app/src/main/java/com/hyperling/apps/games/HighScoreActivity.java
@@ -1,7 +1,7 @@
 package com.hyperling.apps.games;
 
 import android.content.SharedPreferences;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.os.Bundle;
 import android.util.Log;
 import android.widget.LinearLayout;
diff --git a/app/src/main/java/com/hyperling/apps/games/MainActivity.java b/app/src/main/java/com/hyperling/apps/games/MainActivity.java
index 7a7cb0e..7ebf712 100755
--- a/app/src/main/java/com/hyperling/apps/games/MainActivity.java
+++ b/app/src/main/java/com/hyperling/apps/games/MainActivity.java
@@ -2,7 +2,7 @@ package com.hyperling.apps.games;
 
 import android.content.Intent;
 import android.content.SharedPreferences;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.View;
diff --git a/app/src/main/java/com/hyperling/apps/games/OptionsActivity.java b/app/src/main/java/com/hyperling/apps/games/OptionsActivity.java
index 9679043..8970af3 100755
--- a/app/src/main/java/com/hyperling/apps/games/OptionsActivity.java
+++ b/app/src/main/java/com/hyperling/apps/games/OptionsActivity.java
@@ -3,7 +3,7 @@ package com.hyperling.apps.games;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
-import android.support.v7.app.AppCompatActivity;
+import androidx.appcompat.app.AppCompatActivity;
 import android.view.View;
 import android.view.WindowManager;
 import android.widget.Button;
diff --git a/build.gradle b/build.gradle
deleted file mode 100755
index af07ec8..0000000
--- a/build.gradle
+++ /dev/null
@@ -1,32 +0,0 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
-
-buildscript {
-    repositories {
-        mavenCentral()
-        maven {
-            url 'https://jitpack.io'
-        }
-        google()
-        maven {
-            url 'https://maven.google.com/'
-            name 'Google'
-        }
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:9.5.0'
-
-        // NOTE: Do not place your application dependencies here; they belong
-        // in the individual module build.gradle files
-    }
-}
-
-allprojects {
-    repositories {
-        mavenCentral()
-        google()
-    }
-}
-
-tasks.register('clean', Delete) {
-    delete rootProject.buildDir
-}
diff --git a/build.gradle.kts b/build.gradle.kts
new file mode 100644
index 0000000..c49091b
--- /dev/null
+++ b/build.gradle.kts
@@ -0,0 +1 @@
+// Root build file - plugins managed via gradle/libs.versions.toml
diff --git a/gradle.properties b/gradle.properties
index b044c03..88f1374 100755
--- a/gradle.properties
+++ b/gradle.properties
@@ -18,4 +18,4 @@ org.gradle.jvmargs=-Xmx1536m
 
 # Move to AndroidX
 android.useAndroidX=true
-android.enableJetifier=true
\ No newline at end of file
+# android.enableJetifier removed - all support libs migrated to AndroidX
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
new file mode 100644
index 0000000..d2d272d
--- /dev/null
+++ b/gradle/libs.versions.toml
@@ -0,0 +1,19 @@
+[versions]
+agp = "9.5.0"
+kotlin = "2.4.21"
+coreKtx = "1.19.1"
+appcompat = "1.7.1"
+espressoCore = "3.7.0"
+junit = "4.13.2"
+junitVersion = "1.3.0"
+
+[libraries]
+androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
+androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
+espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+junit-ext = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+
+[plugins]
+androidApplication = { id = "com.android.application", version.ref = "agp" }
+kotlinCompose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
diff --git a/settings.gradle b/settings.gradle
deleted file mode 100755
index e7b4def..0000000
--- a/settings.gradle
+++ /dev/null
@@ -1 +0,0 @@
-include ':app'
diff --git a/settings.gradle.kts b/settings.gradle.kts
new file mode 100644
index 0000000..d06488f
--- /dev/null
+++ b/settings.gradle.kts
@@ -0,0 +1,19 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+        maven { url = uri("https://jitpack.io") }
+    }
+}
+
+rootProject.name = "HyperGames"
+include(":app")