Spike. Up and down arrows to move. As the blue circle, dodge the incoming spikes. Pick a difficulty. The harder difficultly, the more each spike you dodge is worth. You have 5 hearts. Get hit and you lose a heart. Lose all your hearts and you lose!
Music : incompetech.com - Title and End Multitask - In-game Terraria - In-game Nova - In-game Everything else by Cheese1134