おなけんタワー is a free casual puzzle game available on Android, designed for fans of the 女子研究大学 (Girls Research University) YouTube group. Players aim to stack five unique SD characters—ニキ, しろせんせー, りぃちょ, キャメロン, and 18号—falling from above to achieve high scores. The game encourages strategic placement, as players must rotate and drop characters in the desired position to build the highest tower possible. The higher the tower, the better the score, making it a fun challenge for players.

In addition to stacking gameplay, おなけんタワー includes a competitive element where players can compare their scores against others on a leaderboard. This adds a layer of excitement as players strive to surpass their friends and the other group members' scores. With its charming graphics and straightforward mechanics, this game is ideal for those looking for a light-hearted way to pass the time or for fans of the adorable character designs.