20 em 1 Master System box art

Sega Master System · Action

20 em 1

Deep cut

SystemSega Master System
Released1995
GenreAction
DeveloperTec Toy
PublisherTec Toy
Players1 player
CommitmentAn evening or two (Roughly 1–6 hours to see it through)
LegacyDeep cut · legacy score 2

Released for the Sega Master System in 1995, 20 em 1 is an action game developed by Tec Toy.

It landed about 9 years into the Master System's life. Other notable Master System releases from 1995 include Dynamite Headdy.

Tec Toy also made FIFA International Soccer, Street Fighter II and Earthworm Jim for the Master System.

This is a solo experience: one player, no waiting on anyone else.

Pick it if…

  • you want to fight, blast and test your reflexes
  • you have time for an evening or two (roughly 1–6 hours to see it through)
  • you've played the Master System hits and want something less obvious

Maybe skip it if…

  • you prefer slow, thoughtful games over reflex tests
  • you are looking for something to play with friends

What playing 20 em 1 is like

Action games test reflexes and nerve. Expect fast enemies, tight controls and stages you clear by reacting quickly and learning enemy patterns.

Tip for newcomers: Retro action games are often short but tough. Treat early deaths as practice runs; every attempt teaches you where the next threat comes from.

20 em 1 gameplay screenshot on Master System
In-game screenshot (Master System)

20 em 1 cheats & codes

2 codes on file (Action Replay, Other codes). Here are a few Action Replay codes to start with:

Infinite Time00DF-CE99

See all 20 em 1 cheats

20 em 1 walkthroughs & guides

Stuck, or want to go deeper? These trusted sites have full walkthroughs, completion times and more for 20 em 1.

If you like 20 em 1, the Matrix also picks…

Shinobi box art
Shinobi Master System · 1988 · Action Classic

Playing Master System games today

The Master System library is full of colorful arcade-style games that are easy to pick up. Many titles also appear in Sega's official compilations.

20 em 1 FAQ

When did 20 em 1 come out on the Master System?

20 em 1 was released for the Sega Master System in 1995.

Who made 20 em 1?

It was developed by Tec Toy.

Is 20 em 1 multiplayer?

No. 20 em 1 is a single-player game.

How long does 20 em 1 take to play?

As an action game, 20 em 1 typically falls into the "An evening or two" category: roughly 1–6 hours to see it through. Your time will vary with skill and how much you explore.

Read more about 20 em 1 on Wikipedia. Facts on this page are compiled from the open libretro database and Wikidata; "legacy score" reflects how widely a game is documented across Wikipedia's language editions. Spotted an error? Let us know.

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