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TIS-100

Also known as TIS-100, steam:370360, t1

TIS-100 is an open-ended programming game by Zachtronics, the creators of SpaceChem and Infinifactory, in which you rewrite corrupted code segments to repair the TIS-100 and unlock its secrets. It’s the assembly language programming game you never asked for!

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Last update
16 May 2026
Players now
22
Original sources
1
Latest update
Announcement

UPDATE: Fixing missing leaderboards

Today's update fixes a bug where some leaderboards would not show up in the bonus campaign. If you see anything weird in the game, whether or not it's related to leaderboards, please send me an email (zach@zachtronics.c…

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Achievements

Community progression

Top picks from 10 Steam achievements, sorted by player unlock rates.

  • RTFMView the TIS-100 manual.90.5%
  • PARALLELIZESolve SIGNAL AMPLIFIER in fewer than 100 cycles.19.3%
  • BUSY_LOOPSolve SELF-TEST DIAGNOSTIC in over 100,000 cycles.11.3%
  • HALT_AND_CATCH_FIRECrash the TIS-100 with the hidden opcode.9.6%
  • NO_BACKUPSolve SEQUENCE COUNTER without using the SWP instruction.8.5%
  • UNCONDITIONALSolve SIGNAL COMPARATOR without using the JGZ, JLZ, JEZ, or JNZ instructions.7.1%