A Java-based multi-system emulator mainly focused on Sega 16-bit systems.

Initially created as a Sega Megadrive/Genesis emulator and then evolved to emulate the following systems:

• Sega Megadrive/32X
• Sega Master System/Game Gear
• Sega Sg-1000
• Colecovision
• MSX v1
• NES

Sega 32x: The target is a modern mobile cpu capable of boosting ~4Ghz (ie. AMD Ryzen 5 PRO 5650U),
this should allow perf close to 60fps for most titles, YMMV.

Requires java 21+ installed.

Get the most recent zip file from the download section,
for example helios-19.1108.zip and extract to a folder.

Double click on launcher.bat

Open a terminal and run:
chmod +x launcher.sh
./lanucher.sh

MD Bad Apple Demo

SG-1000 Super Uwol
MSX Caos Begins
SMS Astro Force
NES Böbl

Initially based on the Genefusto emulator by DarkMoe.

Tony Headford, m68k core: m68k

J. Sanchez, Z80 core: Z80

Alexey Khokholov, Ym2612 core: Nuked-OPN2

Chris White, JavaGear project and in particular:

• SN76489
• SMS VDP

Tjitze Rienstra, TMSX project and in particular:

• AY38910
• TMS9918a VDP

notaz, SVP core: Picodrive svp

Digital Sound Antiques, Ym2413 core: emu2413

Andrew Hoffman, NES emulator: halfnes

Hitachi SH2 cpu emulator adapted from esoteric_emu's SH4 implementation

Tomek Rekawek, GameBoy emulator: coffee-gb

C-BIOS Association for their open source MSX bios

Devster for their Freeware 32x BIOS files Devster

Released under GPL v3.0