Hentai Marina (2026)

Developer: Boom 18
Platforms: Windows
Genres: Casual, Indie, Simulation
Rating: 5.0 of 5, 6 player ratings
Typical playtime: about 13 minutes
Where to get it: Steam

The 3D catalog: game boxes on wooden shelves, with the cat sitting at the counter next to its greeting.

The catalog in 3D

The same catalog has a room you can walk around in. The cat behind the counter is the AI Catbot, and they pick real games from it when you tell them what you feel like playing. Nothing is for sale, here or in there. Go in from here and this game is already out on the counter, with more like it waiting on the shelf next to it.

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How it feels

A slow-paced, comforting puzzle game where you swap bricks to reveal gentle images, soothing your mind as you progress.

relaxingcozycalmgentlepuzzleunwindingfocuscasual

What players say

Players describe it as a short jigsaw puzzle game with fully AI-generated art and animations. There are 10 puzzles but only 6 animated scenes, which some call a possible bug. Several note it lacks achievements and a gallery, and one player reports animation playback issues.

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More by Boom 18

This page is from Underplayed Gems, a catalog of older and overlooked games. Not quite it? You can browse by platform and genre, or take this one into the 3D catalog and ask the Catbot for something closer.