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Play Great Baseball (US_EU edition) Online
Great Baseball
Play Great Baseball online | Master System. Build an inning through careful batting and baserunning.
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 Great Baseball
Quick start
Start with a button on controller 1 for solo play, or controller 2 for two players. Choose Level 1, select your team and pitcher, then time a swing with 2.
Controls
D-pad: position the batter or pitcher, choose pitches, move fielders in Level 2 and select runners. 2: swing; throw toward the selected base. Baserunning: 1 advances the selected runner, 2 sends him back. Direction plus 1 fakes a fielding throw.
Great Baseball — About this game
Build an inning through careful batting and baserunning. This international cartridge game lets you select a team and starting pitcher, then alternate between attack and defense. Level 1 handles fielding movement for you, while Level 2 adds direct control of the fielders. A separate Home Run Contest offers a shorter challenge. Watch the runners after each hit: a safe single can turn into an out if you send someone toward a guarded base.
Great Baseball 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.