Downloads

Official builds and application updates from Mean Hamster Software.

Looking for C64 or Atari games? Choose how to play to compare native games with MPE cartridge assistance. Find product help.

HamsterOS for PCs

Free disk images for 386-class and 8086/8088/V20 PCs.

Choose the standard HamsterOS .77.19 1.44 MB image for 386-class PCs, or HamsterOS CGA in 720K and 360K editions for 8086, 8088, and V20 computers.

Choose a HamsterOS image Software for HamsterOS Get Hamster Extras Learn HamNet+

HamNet & HamChat

One download center for every supported computer.

Choose HamNet and HamChat for HamsterOS, supported Amiga systems, or Classic Mac OS. Standalone HamChat is also available for Windows 10/11 and modern macOS.

AmigaOS: HamNet 1.0.10 + HamChat 0.6.5
Classic Mac: HamNet 1.0.10 + HamChat 0.6.5
Windows: HamChat 0.6.5
HamsterOS and modern macOS choices are included

Choose Your Computer

AGI

Sierra Game Compiler

AGI-64 + AGI-ANTIC · Windows · v1.1.15

Native games run entirely on your classic computer’s own CPU; the cartridge supplies storage. Prepare on Windows, then play without the PC connected.

Download Windows compiler Supported games & details

Supported systems, titles and release notes

Build 14 original Sierra AGI titles and 2 fan-made adventures for the Commodore 64. The same compiler includes AGI-ANTIC for Atari 8-bit computers, with 16 supported adventures: The Black Cauldron, Donald Duck's Playground, Gold Rush!, Mixed-Up Mother Goose, King's Quest I, King's Quest II, King's Quest III, King's Quest IV (AGI edition), Leisure Suit Larry, Manhunter: New York, Manhunter 2: San Francisco, Police Quest, Space Quest I, Space Quest II, Space Quest 0: Replicated, King's Quest VI AGI demake.

New in 1.1.15: A new first-use guide and linked setup tutorial, retaining Atari Control-number shortcuts, HELP/TAB handling and correct Atari key labels, source-layout compatibility and the Space Quest I C64 cartridge display name repair.

Retains Highly Experimental King’s Quest I and Space Quest I builds for MSX2, Coleco ADAM and TI-99/4A, alongside earlier movement, drawing and keyboard improvements. All five systems build directly on Windows without WSL.

AGI-ANTIC minimum requirements:Atari XL/XE with at least 64K RAM, or an Atari 800 with an Incognito board or similar upgrade. King’s Quest II, Police Quest and Space Quest II require a MegaMax 2 MB cartridge.

Other Games includes native C64 versions of Another World and M.U.L.E.+. Free download: no original commercial game files are included, so supply your own copies. M.U.L.E.+ is bundled.

Check game editions and system requirements. Full-game and real-hardware testing of the three Highly Experimental systems remain open.

MPE

Mean Hamster Power Engine for 8-Bits

TeensyROM+ · Kung Fu Flash 2 · A8PicoCart · Windows · v2.1.4

Team up your C64 or Atari XL/XE with a supported cartridge’s processor. The Windows app prepares matching firmware, supported games and emulators, and an optional HamsterOS for MPE desktop.

Prepare on Windows, then play on the classic computer without the PC connected. Installing cartridge firmware is a separate step from preparing the SD card.

Free, exclusively from Mean Hamster. Supply your original game files and compatible ROMs; commercial games are not included.

Download MPE for Windows Choose your cartridge & explore Setup guide →

Licenses and notices Source offer

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