Space to start. Click on White Bood Cells to prevent them stopping your virus! Hover your cursor above viruses to help them spread faster! Click on Lucky-Red-Blood-Cells to help your virus spread faster! Spread your virus to 100! Yellow: Benefits WBC [White Blood Cells] when touched by WBC. White Blood Cells will either get bigger- or duplicate themselves. Green: Benefits your Virus when touched by your Virus: your Virus will get faster. How to stop bug: To reset after title, spam space until game begins working again. If game continues to bug, reset game.