Kissma is a score-based horizontal shooter with large blocky sprites and liberal use of vibrant colours, in which players must try to score as many points as they can under the strict time limit of sixty seconds per game. The mouse is used to move the disembodied female head around, kissing is done by left clicking, and pressing the K key activates the special attack that clears the entire screen for just one time only.

A kisskey bottle will appear twice in each game, and grabbing these will bestow a random kiss power-up that can be used to spread the love quicker than the basic smooching could ever do. There are only four rank classes to achieve, with three of them already named inside the high score table. (source, gameplay video, Party-Tencho profile page)