There are six types of capsules, differentiated by color: red-red, yellow-yellow, blue-blue, red-blue, red-yellow and blue-yellow. The player must rotate and position these capsules on top of and alongside the viruses and other capsules in an effort to eliminate the viruses. Both viruses and capsules are eliminated when four or more objects of corresponding color are placed in a row or column. A player completes a level by eliminating all viruses on the playing field. The game will end if any capsules obstruct the bottle's narrow neck at the top row of the field. The game consists of twenty one distinct levels, whose starting virus counts range from four at level 0 to 84 at levels 40 and higher. Above level 40, each level starts with 84 viruses. Levels do not increase in difficulty past le