Play Mission - Mainframe Online

Game Overview

Mission: Mainframe is one of those MS-DOS games that somehow slipped under the radar—which is a shame, because it nails that cyberpunk hacker fantasy better than most. You start off infiltrating some corporate mainframe, all neon grids and flickering terminals, and within minutes you're knee-deep in security protocols, dodging patrol bots, and trying not to trip alarms. The soundtrack? Pure '80s synth, the kind that sticks in your head like glue.

It's not just about reflexes, though—you actually have to think. Do you brute-force the password or sneak past the firewall? One wrong move and the whole system locks down on you. There's a weirdly satisfying tension to it, like playing digital cat-and-mouse. If you ever wasted hours on Spy vs. Spy or wished Tron had more hacking, this feels like the game those vibes were meant for. Just be warned: that chiptune theme will haunt your dreams.

Each game uses different controls, most DOS games use the keyboard arrows. Some will use the mouse , "Alt" ,"Enter" and "Space bar".