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Chisel through a layer cake of thousand-year-old civilizations.

Use the MOLEK-SYNTEZ to create small molecules with various pharmacological effects.

​The year is 1997. You used to be a hacker, but now you have the phage.

A visual novel about an AI counseling program, the people who develop it, and the people who use it.

Brave hundreds of hand-crafted challenges as you help Madeline survive her journey to the top of Celeste Mountain!

a little exploration game about hiking up a mountain

Build factories that assemble products for your alien overlords, and try not to die in the process.

Fighting against fortune would be a lot easier if you weren't a walking dice.

A mind-bending recursive puzzle game about boxes within boxes within boxes within boxes.

SHENZHEN I/O: BUILD CIRCUITS. WRITE CODE. RTFM.

Remember: Losing is fun!

A puzzle game about planning the train route for the world's most awkward space colony

Alternate reality internet simulator set in 1999!

It’s the assembly language programming game you never asked for!

(Through Puzzling Exhibitions)

At the end of everything, hold onto anything.

The automation tower defense game

SpaceChem is an obscenely addictive, design-based puzzle game about fake science!

All seven Zachtronics solitaire games, updated with new 4K graphics, plus one brand new Tarot-themed solitaire variant.

A puzzle game where you change the rules. Also award-winning!

Boot up your Z5 Powerlance and dial into Last Call BBS, the last game from Zachtronics!