Play 905 Online
You boot it up to chunky pixels and zero instructions—start poking around, and suddenly you're knee-deep in some weird puzzle-strategy hybrid that won't let go. That 80s mystery vibe hits just right.

I first came across 905 in the MS-DOS Classic Games collection from 2000, a release that bundled a number of older titles for retro enthusiasts. The game was developed by Adam Cadre, and it fits right into that era of text-heavy, puzzle-oriented adventures where you had to figure things out through trial and observation. There's no hand-holding; you're just dropped into a scenario and expected to make sense of it through exploration and interaction.
You play as a character trapped in a mysterious building, and your goal is to escape by solving a series of interconnected puzzles. The gameplay involves moving room by room, examining objects, and using items in logical or sometimes unexpected ways. Combat isn't the focus; instead, you'll spend time deciphering clues, manipulating the environment, and dealing with occasional time-sensitive events. The pacing is deliberate, and some puzzles can be quite challenging, requiring careful thought rather than quick reflexes. It feels like untangling a knot one careful pull at a time.
Each game uses different controls, most DOS games use the keyboard arrows. Some will use the mouse , "Alt" ,"Enter" and "Space bar".

Download 905 ROM
You can download this ROM to play 905 offline using an MS-DOS emulator (Top Emulators).
*This ROM is provided for backup and educational purposes only.