Play The Sentinel Online
Creep up a grid world by stealing energy from blocks, reshaping the land while avoiding Sentinels that freeze you if they catch your gaze—tense, brain-bending chess with geometric dread.

I first encountered The Sentinel in 1986, a game from Geoff Crammond released as part of the MS-DOS Classic Games series. It was a strange, quiet presence on the platform, a puzzle game that felt more like a piece of abstract art than the action titles or RPGs that usually filled my floppy disks. There was no story, no characters, just a stark, geometric landscape and a palpable sense of being watched.
You control a hovering consciousness, moving from one square to the next on a 3D isometric grid. Your goal is to absorb the energy from the block you stand on to create a new body on a higher level, all while a towering, pyramid-like Sentinel scans the terrain. If it sees you, it freezes you in place, and the game ends. The core mechanics involve careful positioning, absorbing energy to reshape the landscape for cover, and eventually absorbing the Sentinel itself once you are positioned above it. The pacing is slow and deliberate, a tense waiting game where a single misstep means starting over. It feels like a high stakes game of hide and seek played on a chessboard designed by an anxious mathematician.
Each game uses different controls, most DOS games use the keyboard arrows. Some will use the mouse , "Alt" ,"Enter" and "Space bar".

Download The Sentinel ROM
You can download this ROM to play The Sentinel offline using an MS-DOS emulator (Top Emulators).
*This ROM is provided for backup and educational purposes only.