The red block is controlled with WASD and the blue block is controlled with the arrow keys. Survive longer than your opponent as the game gradually speeds up; don't run into any blocks! Scratch eventually runs out of clones so to avoid that play on turbowarp here: https://turbowarp.org/770704551?clones=Infinity (report bugs in the comments)
December 2, 2022: first prototype Dec 3: You can now crash into your own blocks, the game speeds up over time, and added gray blocks and title screen. Dec 4: Added sound effects and settings menu, Dec 5: Added gray block amount and volume settings, plus music from pixabay.com/music/flying-cobra-120600/. Dec 6: Added stats and acceleration setting. Dec 12: Reduced minimum acceleration from 0.5 to 0.