/**** 
* Initialize Game
****/ 
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
//<Write entity 'classes' with empty functions for important behavior here>
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
// Variables to manage game state
var isGreen = false;
var changeColorTimeout;
var greenStartTime; // Declare variable to store the time when the screen turns green
// Function to change the screen color
function changeScreenColor() {
	if (!isGreen) {
		game.setBackgroundColor(0x00FF00); // Change to green
		isGreen = true;
		greenStartTime = Date.now(); // Record the time when the screen turns green
	} else {
		game.setBackgroundColor(0x000000); // Change back to black
		isGreen = false;
	}
	// Randomly change color again between 1 to 3 seconds
	changeColorTimeout = LK.setTimeout(changeScreenColor, Math.random() * 2000 + 1000);
}
// Start the color change cycle
changeColorTimeout = LK.setTimeout(changeScreenColor, Math.random() * 2000 + 1000);
// Event listener for screen tap
game.down = function (x, y, obj) {
	if (isGreen) {
		// Player clicked when the screen was green
		// Calculate score based on reaction time (faster = higher score, max 1000)
		var reactionTime = Date.now() - greenStartTime; // in milliseconds
		var score = Math.max(0, Math.round((3000 - reactionTime) / 3)); // max 3 seconds, scaled to 1000
		LK.setScore(score);
		LK.showYouWin(); // Show win screen
	} else {
		// Player clicked when the screen was not green
		LK.showGameOver(); // Show game over screen
	}
};

===================================================================
--- original.js
+++ change.js
@@ -13,13 +13,15 @@
 ****/ 
 // Variables to manage game state
 var isGreen = false;
 var changeColorTimeout;
+var greenStartTime; // Declare variable to store the time when the screen turns green
 // Function to change the screen color
 function changeScreenColor() {
 	if (!isGreen) {
 		game.setBackgroundColor(0x00FF00); // Change to green
 		isGreen = true;
+		greenStartTime = Date.now(); // Record the time when the screen turns green
 	} else {
 		game.setBackgroundColor(0x000000); // Change back to black
 		isGreen = false;
 	}
@@ -31,9 +33,12 @@
 // Event listener for screen tap
 game.down = function (x, y, obj) {
 	if (isGreen) {
 		// Player clicked when the screen was green
-		LK.setScore(LK.getScore() + 1); // Increment score
+		// Calculate score based on reaction time (faster = higher score, max 1000)
+		var reactionTime = Date.now() - greenStartTime; // in milliseconds
+		var score = Math.max(0, Math.round((3000 - reactionTime) / 3)); // max 3 seconds, scaled to 1000
+		LK.setScore(score);
 		LK.showYouWin(); // Show win screen
 	} else {
 		// Player clicked when the screen was not green
 		LK.showGameOver(); // Show game over screen