Gesui Oukoku
A tower defense game that educates about water and sewage treatment, produced by the real-life water treatment company Meidensha.
Gesui Oukoku is a strategy, released 14 May 2026 on Nintendo Switch, Android and iOS.
What Gesui Oukoku is
Gesui Oukoku was released in 2026. It is available on Nintendo Switch, Android and iOS.
How it plays
It is played from a third person perspective. Its themes are educational. It is a single-player game with no multiplayer component.
What it launched against
Gesui Oukoku launched on 14 May 2026, within three weeks of 007 First Light, Forza Horizon 6, LEGO Batman: Legacy of the Dark Knight and Directive 8020. It arrived 9 years into the Nintendo Switch's life, so it was built for hardware developers already knew well.
Released around the same time: 007 First Light, Forza Horizon 6, LEGO Batman: Legacy of the Dark Knight, Directive 8020.
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Quick answers
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