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75% positive of 4 · 4 user reviews · Live from Steam
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Free on Steam. The demo has its own app, so its players are counted separately.
The Portsmoor Abysm is a cute cosmic horror retro puzzle game, inspired by classics like Boulder Dash. You are trapped beneath the town of Portsmoor, and to escape you will have to solve Sokoban-style puzzles, face otherworldly monsters, and reveal the ancient horror hiding in the catacombs.
Live data from Steam, tracked by SteamPlayerBase.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 75% on 2026-11-01 → 75% today (4 reviews)
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Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Changed: Windows / Mac, Linux (2 downloads)
Public beta build, not guaranteed to be updated or stable
Inspired by how adding pumpkins to the game came out I decided to add some new polish to the game:I've tweaked and increased the lighting in the game, making the catacombs a bit more varied and colorful while maintaining the atmosphereI've tweaked the camera t…
This update mostly contains a couple of bug fixes:Reloading a save point could put you into a mode where a tile would be inaccessible until the chamber was fully restarted. That problem should be fixed by this update.The skull effigies would occasionally have …
This update contains two minor adjustments related to the save point update:Restarting the level, once there is a save point, now requires two double-taps on the restart button. This change was made to make sure that you won't trigger a restart by mistake, whe…
This release introduces save points, a feature which many have requested, and which is a major step forward for the game! Save points further improves the emphasis on puzzles by minimizing the need to repeat part of the level which you've already figured out.Y…
This update contains a small feature and a fix:There is now a setting which enables you to postpone the final chamber of each episode. This was previously not possible as these chambers were intended as skill gates. It's still not enabled by default, but if yo…
This is a fairly small update, with one fixed chamber, one replaced bonus level, and some new details and polish.Fixed the episode 2 level RhizaReplaced the bonus level Szimmetria with a newly designed level called KathairóImproved the player idle animation wi…
The Portsmoor Abysm is on sale for the pumpkin fest!To celebrate the Spooky Season some of the boulders in the catacombs will be painted like pumpkins for the duration of the sale!The Portsmoor Abysm started as a spooky jam game, and in five days, on the 28th,…
The end of the summer is approaching, at least here in Sweden, and to celebrate the imminent arrival of shorter days, more rain, and lessened risk that people try to lure you away from the computer and drag you to the beach, I'm putting The Portsmoor Abysm on …
This update includes one major new feature, a chamber fix, and a couple of new bonus chambers.The Portsmoor Abysm now has a Swedish translation available. This may be significant for those who would prefer to play the game in Swedish, but also because it means…
The Portsmoor Abysm started as a jam game, which I kept working on, and eventually decided to release on Steam. One of the primary reasons to put this game on Steam was to make it easily accessible on the machine where I personally prefer to play this kind of …
Not tested by Valve yet. Results from Valve's own testing.
Valve hasn't published test details for this game.