Use arrow keys. Buy the upgrade to get more coins per level. It is a pretty barebones game tbh. You have to press space to actually start the game.
This uses semi scrolling and the engine from consumed, all credits to me. 3/9/23: Level progression is now random. 3/20/23: World record added, more upgrades coming soon. 3/21/23: added another upgrade, and changed the UI 3/23/23: added another upgrade again, fixed bug with cost of added coins. 3/23/23: The new upgrade is really overpowered so have fun while it lasts, I will fix it tomorrow probably. 3/24/23: Added Auto-Buy button that spam buys whatever it feels like.