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21

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21

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1982 · Puzzle, Simulation · MS-DOS / PC

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About 21

"21" is a 1982 card game released under the Micro Games label, and its title points to the classic casino game of blackjack, where players aim to reach a hand value of twenty-one without going over. Games of this type were common on early home computers, offering a simple, rules-driven card experience that fit comfortably within the limited memory and display capabilities of machines from the very start of the 1980s.

21 – screenshot 1

Beyond the blackjack premise implied by the title and its listing among logic and simulation games, I cannot verify the specific presentation or options this particular version offered, so I will not invent them. It stands as an example of the many straightforward card and gambling simulations that populated the earliest PC software libraries.

21 FAQ

Can I play 21 online for free?
Yes — you can play 21 right here in your browser for free, with no installation and no plugins, on both desktop and mobile.
Can I download 21?
Yes, 21 is available to download here — use the Download button on this page.
What platform does 21 run on?
21 is a MS-DOS / PC game from 1982.
When was 21 released?
21 was released in 1982.
What genre is 21?
21 falls under: Logic, Simulation.
How do I save my progress in 21?
Save inside the game itself — via its own menu, or F2/F3. And if you log in (free), your position is also stored in the cloud, so you can continue on another computer or phone.
Is it legal to play 21 online here?
You play it in your browser via an emulator. For how we handle abandonware and copyright, see our "Is it legal?" page.
How do I control 21?
The controls are in the Controls section on this page. The keyboard is usually all you need — arrow keys to move and Ctrl, Alt or Space for actions.
Can I play 21 on mobile?
Yes — it runs right in your browser on phones and tablets too. Just tap Play, nothing to install.
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Gaming platform: MS-DOS / PC_□✕
About the platform 1981–2000

For two decades MS-DOS was the main gaming platform on PCs. Games launched from the command line and used sound cards like Sound Blaster or AdLib. DOS is the home of legends such as Doom, Prince of Persia and Commander Keen.

Maker: IBM PC / Microsoft  ·  Years: 1981–2000

Here on oldgame.cz you play it right in your browser via the js-dos emulator — no install, no plugins, on desktop and mobile.

Recommended controls: These games are controlled with the keyboard (see the controls table next to the game). A USB joystick/gamepad can make some titles more comfortable, but is not required.

» More about this platform on Wikipedia

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