More browsing paths
Play 20 em 1 (Brazil edition) Online
20 em 1
Play 20 em 1 online on Master System. Choose among twenty small games from a numbered menu.
Browser play

Sega Master System — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| 1 / START | X |
| 2 | Z |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play 20 em 1
Quick start
Press 1 to open the menu, use the D-pad to choose a number and press 1 to launch that game. Try game 1 and move to catch the falling tools.
Controls
D-pad: choose a menu number and move in the selected game. 1: open the menu and confirm. PAUSE serves as START. Individual games have different actions and goals.
20 em 1 — About this game
This Master System collection offers twenty separate challenges rather than a single campaign. Its numbered menu leads to activities such as catching a worker’s falling tools, steering a skateboard past obstacles and diving for treasure while avoiding a shark. Each selection has its own goal, so learning one game does not finish the others. Try several numbers to find the pace and kind of challenge you enjoy.
20 em 1 Game manuals
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · segaMS
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.