In this engaging game, your mission is to eliminate viruses using color-coordinated capsules. The playing field is filled with viruses in three vibrant colors: red, yellow, and blue. As a player, you control the descent of each capsule, moving it side to side and rotating it to align it perfectly with the viruses and any capsules already in place. The key to success is to create alignments of four or more capsule segments or viruses of the same color, either horizontally or vertically, which will then be cleared from the board. Your ultimate goal is to clear all viruses to successfully complete each level. Be mindful, as the game ends if capsules stack up and block the narrow neck of the bottle.

You have the flexibility to choose your starting difficulty level each time you begin a new game, selecting from a range of zero to twenty. This choice directly affects the number of viruses you need to eliminate. Additionally, you can adjust the game speed with three different settings, which determine the rate at which capsules fall. Your score is calculated based on the elimination of viruses, not on the time you take or the number of capsules you use. If you conquer the highest difficulty level, you can keep playing to boost your score, though the virus count won't increase. Extra points are earned for eliminating multiple viruses simultaneously, but there are no bonus points for triggering chain reactions where one clearance leads to another. Remember, the game's speed setting also influences your score, with faster speeds rewarding you with more points.