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🎮 Play Sonic Eclipse Demo Online (Sega Master System)

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Sonic Eclipse Demo cover art
SAVE SLOTS:

🕹️ GAME CONTROLS

Action / ButtonKeyboard Key
D-Pad (Up / Down / Left / Right)Arrow Keys
Button AZ or J
Button BX or K
Button X / Turbo AA or U
Button Y / Turbo BS or I
SelectShift
StartEnter

💡 Tip: You can also connect any USB / Bluetooth Gamepad controller!

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🎮 VISUAL CONTROLLER MAPPING & GAMEPAD DIAGRAM Auto-Detect: Active
L1 / LB R1 / RB SELECT START Y X A B RETRO ARCADE
Gamepad InputRetro FunctionKeyboard Key
D-Pad / AnalogCharacter Movement / Steering▲ ▼ ◄ ►
Button A (East)Primary Action / Attack / FireZ / K
Button B (South)Secondary / Jump / CancelX / J
Button X / YSpecial / Turbo / Extra FireA / S
SelectInsert Coin / Select OptionRight Shift
StartGame Start / Pause GameEnter
Game info: 👁️ 123 plays
Sonic Eclipse Demo
box cover
Game title:Sonic Eclipse Demo
Platform:Sega Master System
Emulator Core:SEGAMS
Game Manual: 📖 Official Manual (Built-in)
Share Game:
License:Freeware / Abandonware
Available online emulators for Sonic Eclipse Demo:

Different online emulators are available for Sonic Eclipse Demo. Select an emulator core below for optimal performance:

Emulator Core EngineTechnologyMultiplayerGamepadTouchAdsAction / Switch
EmulatorJS (Default WebAssembly) WebAssembly / JSYESYES YESNO ▶ ACTIVE
Sega Master System (Recommended) WebAssembly / LibretroYESYES YESNO PLAY ⚡
SMS Plus GX WebAssembly / LibretroYESYES YESNO PLAY ⚡
Game description:

Sonic Eclipse Demo is a fan-created homebrew project for the Sega Master System. Originally featured in the Sonic Hacking Contest, this demo showcases custom 8-bit level design and platforming mechanics inspired by the classic Sonic series. It is fully playable directly in your web browser.

How to Play

Navigate the levels and gather rings using standard Sega Master System controls. The D-pad is mapped to the Arrow Keys for movement, while Buttons 1 and 2 are mapped to Z and X for jumping and standard actions. Use Enter to pause the game.

Source: SHC Vault

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