Independent software studio · Since 1985
Games and tools for computers worth remembering.
Mean Hamster has shipped original games, Thoughtful ports, and useful software for four decades—from Atari and Pocket PC to HamsterOS and HamNet today.
Now shipping: HamsterOS Beta 2 · Free download
Founded 1985
Games · Systems · Tools
Classic + modern hardware
Still independent
Studio log
Latest news
Selected work
Selected games
Scary Mansion 3D+ 5200
ArchiveThe updated Atari 5200 adventure: explore 90 rooms across two mazes with new creatures, new treasure, bug fixes, a new title screen, and updated instructions.
Blockade 5200
ArchiveA digital Atari 5200 ROM release, ready now for compatible hardware and emulators.
Super Attack Battle 5200
ArchiveUp to four players battle with tanks, helicopters, submarines, and jets across four playing fields for each vehicle type.
Double Dragon 5200
Coming soonComing Christmas 2026: a new Atari 5200 conversion of Double Dragon, landing somewhere halfway between the 2600 and 7800 versions with music, punches, kicks, 14 scenes, and plenty of action.
Gauntlet II 5200
ArchivePreorder Gauntlet II for Atari 5200 on a physical cartridge, expected to ship by September 15, 2026.
TET-TRS Model II
ArchiveA falling-block puzzle game for the TRS-80 Model II, available on a physical 8-inch autoboot disk with a printed label.
Current work
Built for the machines you use
HamsterOS
A free, friendly operating system for 386 and 486 PCs—complete with a desktop, applications, games, and real floppy-disk distribution.
Explore HamsterOS →02HamNet
A free browser that gives supported classic computers a useful way onto the web, with optional modern-page rendering through HamNet+.
Explore HamNet →03HamsterWeazle
A clear desktop interface for GreaseWeazle floppy imaging on Windows and Mac.
Explore HamsterWeazle →