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Big Business
A landmark action game for the DOS, Big Business combines tight controls with engaging gameplay. Its enduring appeal lies in the perfect balance of challenge and reward.
- Released
- 1990
- Platform
- DOS
- Genre
- Action
- Rating
- 4.6 / 5 (672)
- Last updated
Big Business Controls — DOS Keyboard Keys
Default keyboard bindings for Big Business on our in-browser DOS emulator. Plug in a USB or Bluetooth gamepad to auto-detect mappings, or rebind any key from the emulator settings menu.
DOS games use the keyboard directly as the controller — there is no console-button mapping. Open the in-game documentation or check the game-specific options screen for the key layout used by this title.
Rebind any key from the EmulatorJS in-game settings menu (gear icon → Controls). A connected gamepad auto-maps to the same buttons.
Big Business Longplay & Gameplay Videos
Watch a full playthrough of Big Business on DOS before you dive in — recommended for getting a feel for the game's pacing, story beats, and difficulty curve.
Watch longplay on YouTube
"Big Business" DOS longplay 1990
External references
Frequently Asked Questions
When was Big Business released?
Big Business was released in 1990 for the DOS.
What type of game is Big Business?
Big Business is a Action game for the DOS, playable instantly in your browser — no downloads, no installs.
How can I play Big Business for free?
Open this page and click "Play Now" — Big Business runs free in your browser via WebAssembly emulation. No account, no payment, no installer.
Do I need to download anything to play Big Business in the browser?
No. Big Business streams from a public archive into a browser-side DOS emulator. Nothing is installed on your computer.
Can I save my progress in Big Business?
Yes. Save states are stored in your browser (IndexedDB) per game, and you can also use any in-game save the original DOS cartridge supported.
Does Big Business work on mobile devices?
Yes — the DOS emulator runs on iOS Safari and Android Chrome. Touch controls overlay the game; landscape mode is recommended.
Is it legal to play Big Business this way?
RetroGameSpace is a transient caching reverse-proxy and does not host first-party copies of Big Business. Game files are fetched on demand from publicly-accessible archives. You are responsible for compliance with your local laws and the bring-your-own-ROM principle.
