Vampire Fever

You are "Viro", a ninja who fights against evil creatures! But instead of using conventional weapons, you spread a virus which only affects demons and the undead. Vampire Fever is a billiard-like physics game, which you control your character "Viro" (instead of the cue ball) and try to infect the other creatures on the screen by touching them. The virus is very contagious, but it has one weakness: If two infected creature collide, they both heal. As you progress, you encounter with different creatures (vampires, mummies, ghosts, electric demons, chocolate demons, and many more) and artifacts (barrels, bombs, slicers, trees, portals, etc.) which have different properties and physical behaviours, which call for new strategies!