A stealth/flight game where you play as a mosquito. Your goal is to stockpile blood from a typical Japanese family without being noticed and swatted. Each stage features a member of the family as they go about their day - the daughter as she relaxes in her room, the mother as she makes dinner, the father as he tends to his flowers, and so on. Each stage also has a number of hidden collectibles and often interactable elements - for example, you can fly into the power button on the daughter’s radio to turn it on, which will cause her to get up and turn it off. This is sometimes necessary to expose your target’s suck points - for some reason, you can only extract blood from specific designated points on your target’s body. Each target also has designated “relax” points you can crash into to calm them down if they’ve seen you and started attacking.