Viricide

Your mission in this action shooter is to clean up EXADI, a super advanced artificial intelligence, after a particularly nasty virus rampaged through her system and left a number of her programs badly damaged. Buy upgrades, shoot bad guys, and ponder where the cutoff lies for being considered a living thing. Use either WASD or ARROW KEYS to move around. Use YOUR MOUSE to aim and click LEFT MOUSE BUTTON to fire. Press the SPACEBAR to use Zero Writes, once you have purchased at least one. Have fun