To clarify: to start the game, click the button in the middle of the tree No, the yellow things are not coins. They're the obstacles. To navigate the over worlds, use the arrow keys. E levels are entirely optional. They're harder versions of the last level of the world, To leave a world, hit the "back" button at the bottom of the world.
If you ask how this is hacked, then maybe play it and see the original as well
