The Portsmoor Abysm

Explore the Catacombs of Portsmoor, push boulders, avoid deadly traps, face otherworldly monsters, and solve mind-bending puzzles. The Portsmoor Abysm is an atmospheric puzzle game with Sokoban-like mechanics, inspired by classics such as Boulder Dash, Supaplex, or Emerald Mine.

The full game will be available on Steam, and if you play the demo there, progress will carry over, so try it out and wishlist today!

https://store.steampowered.com/app/4025180/The_Portsmoor_Abysm/

Push boulders and watch them fall

The catacombs are a dangerous place to visit, filled with falling boulders, deadly miasma, ravenous plants, and much more. Learn the rules that govern these depths to solve puzzles and make progress.

Face the monsters lurking in the darkness

The various monster you encounter will haunt your dreams, and kill you if you get too close. Yet, figuring out how each of them moves and behaves is key to descend through the chambers, towards your ultimate goal, escape!

Escape the catacombs and save the town

Uncover the secrets lurking in the catacombs: Who trapped you down here, and why? Who built these halls, and what is the source of the all the other-wordly horrors inhabiting them? 

Enjoy the sights and sounds

The Portsmoor Abysm has hand-crafted pixels with a 16 bit vibe, coupled with atmospheric sounds and music. Explore the stylish catacombs.

Play the demo today, for Windows and Linux

The first episode, called The Catacombs, covers the first quarter of your quest. It introduces the story through 18 levels with various types of puzzles, based on terrifying monsters and environmental hazards.

Play the full game March 20th 2026

The full game will contain three more episodes, each with new monsters, environments, and more mind-bending puzzles!

Wishlist it on Steam!
https://store.steampowered.com/app/4025180/The_Portsmoor_Abysm/

Features

• Gamepad and keyboard support with customizable key bindings
• Accessibility settings for game speed, light levels, and text sizes
• And much more...

The Portsmoor Abysm was originally a jam game simply called Abysm. The full game demo is longer, and every aspect of it has been improved, but the jam version is still available, and can be played in the browser.