Bone Horde

Instructions:

Press Z (A on controller) to start the game.

You can move with the arrow keys and swing your staff with X. Hitting enemies will hurt them and hitting upgrade orbs will use them, at the cost of their blood requirement.

Hitting the blood tree will water it with blood and increase the intensity of the onslaught, which means more blood for upgrades. But growing too fast can be overwhelming. 

Water the blood tree to full growth to win.

Press Ctrl+R  or refresh the page to fully reset. The in-game reset doesn't work properly sry.