Click the up arrow to move up and let go to move down. Click left/right arrow keys to change the level page. Press P to pause the game.
Due to my ADHD, I suddenly gained interest in GD, and made this. October 16: Added levels 1-10. October 17: Added Levels 11-16. October 18: Added Level 17. October 19: Added level 18. October 20: Added level 19, 20 and a mute-music button. October 21: Added Level 21. October 22: Added level 22 and made W and LMB push the wave up. October 24: Added level 23 and a trail. October 28: Buffed and nerfed some levels. November 1: Added level 24 and 25. November 4: Added level 26. November 5: Added level 27. November 7: Added a pause menu and an attempt count. November 9: Added level 28. November 20: Added level 29. December 12: Added level 30.