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 3 · Free download
Founded 1985
Games · Systems · Tools
Classic + modern hardware
Still independent
Studio log
Latest news
Selected work
Selected games
Scary Mansion 3D+ 5200
AvailableThe updated Atari 5200 adventure: explore 90 rooms across two mazes with new creatures, new treasure, bug fixes, a new title screen, and updated instructions.
Crossbow
Coming soonThe Exidy classic is getting a full remake — updated graphics, new music and sound, power-ups, and hidden secrets. Coming to PC, Mac, iOS, and Android.
Castles & Kings 5200
Coming soonComing soon: Mean Hamster is bringing the rediscovered Castles & Kings prototype to the Atari 5200.
Cat Wash 2
Coming soonRun the grooviest cat salon in town! Wash, groom, pamper, and play in this colorful sequel — more cats, more combos, and a whole lot more disco.
KLIX 5200
AvailableThe Atari 5200 tile-stacking game returns in a refined 2026 cartridge edition with improved movement and smoother gameplay.
TET-TRS Model II
AvailableA 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 for PCs
A free desktop for 386-class PCs, plus a CGA edition for 8086, 8088 and V20 machines. Add applications, games and Hamster Extras.
Explore HamsterOS →02HamNet & HamChat
Free browsing and chat across supported classic computers, with modern HamChat companions and an optional HamNet+ service.
Explore HamNet →03HamsterWeazle
A clear desktop interface for GreaseWeazle floppy imaging on Windows and Mac.
Explore HamsterWeazle →04Game compilers & engines
Choose native games that run on the original computer’s CPU, or MPE games and features assisted by a supported cartridge.
Choose how to play →Since 1985
Four decades of making things.
From Amiga shareware and Pocket PC adventures to today’s games, desktops and tools.
Read our studio story →Work with us
Have a project in mind?
Game development, design, ports and specialist software from an independent studio.
Explore studio services →Also from Mean Hamster
PawPrints 3D
Custom pet keepsakes made from your photos, with an artist’s preview before production.
Visit PawPrints 3D ↗