Mods / solo

• MMini Mazesby garzahdA very tricky logic puzzle for you. Can you find the unique path that satisfies all the clues?202 downloadsupdated 5 y ago
• YYet Another Tank...by 76561199053849755Automate vehicles with discrete logic to fill a tank.195 downloadsupdated 4 y ago
• TThe great escape (reversed)by 76561199053849755What would have happened if the Level 44 Rescue Team had abandoned the mission? Go back to your cell and see... Warning: this level is only for players who have already solved the standard level 44... (based on an original idea by Garzahd :-)116 downloadsupdated 5 y ago
• SSabotage with careby 76561199053849755WORRYING NEWS: our enemies have developed a new technology that could give them a decisive advantage: we need to know more! Go deep into their secret factory and see what's going on. Your brand new DETONATOR will help you find your way...95 downloadsupdated 5 y ago
• TTowers of Hanoiby garzahdThis is a demo of the famous Towers of Hanoi problem. Open-source, feel free to analyze and improve the CPU code.80 downloadsupdated 5 y ago
• CCore Dumpby 76561199053849755Expertise in fast logic would be a plus... (probably best after level 34)77 downloadsupdated 5 y ago
• CChristmas Puzzleby 76561199053849755* * * Special Christmas puzzle * * * Build an automatic gift distribution system! Drew and Brett are counting on your ingenuity... (you may also try "Christmas Puzzle II", a slightly more difficult version)56 downloadsupdated 4 y ago
• LLevel 1 (revisited)by 76561199053849755You enjoyed Level 1... Why not enjoy level 1 (CPU-)revisited? [2023-05-06 update: shortest time wins!]49 downloadsupdated 4 y ago
• PPump up the volume...by 76561199053849755Automate things(?) to pump oil from one tank to another...45 downloadsupdated 4 y ago
• DDire strait...by 76561199053849755Official Epilogue of Level 44 Stuck in the wreck of a sinking submarine... who could get us out of there?40 downloadsupdated 5 y ago
• FFire Safety Exerciseby Moe AnthropomorphismJust a little level I made to play around with CPU features. Less of an actual CHR$ puzzle and more of an adventure game. See if you can find all the contextual text notices and escape your house!39 downloadsupdated 5 y ago
• HHeist of the Centuryby 76561199053849755Break into the vault, collect the diamonds and escape underwater... A mixture of levels 39 and 44, which you'd better have completed before!38 downloadsupdated 4 y ago
• LLevel 1 (by night)by 76561199053849755Design an automated vehicle to find your way in the fog... You are not dreaming, this is a real CPU nightmare! [2021-10-04 update: optimize the time!]37 downloadsupdated 4 y ago
• PpmuD eroCby 76561199053849755Was Core Dump too simple for you? Try pmuD eroC! A level strictly based on the use of elementary logic gates, with a goal that is easy to explain... Demonstrate your skills as a logic circuit designer!36 downloadsupdated 4 y ago
• NNekoBaron - Miner Trainingby Neko_BaronWe need you to dig us up some diamonds and move them to a safe spot, union says we cant dig by hand so you will need to build a drilling machine. Just be careful no to drill though the diamonds!36 downloadsupdated 5 y ago
• CChristmas Puzzle IIby 76561199053849755* * * Special Christmas puzzle * * * Build an ADVANCED automatic gift distribution system! Drew and Paris are counting on your ingenuity... (same as "Christmas Puzzle" but a little more difficult ;^)35 downloadsupdated 4 y ago
• TTunnel in a sandboxby 76561199053849755An impossible mission? No, just a level that uses the limits of the physics engine... A challenge for the experts.34 downloadsupdated 5 y ago
• NNekoBaron - Bin to Decby Neko_BaronLearn how to turn binary into a decimal value with a 1bit and 2 bit example, make your own 3bit converter to win the level!32 downloadsupdated 5 y ago
• NNekoBaron - Bank Jobby Neko_BaronGet into the bank and steal the container of diamonds from inside! A easy level that will just require you to code you own code breaker to unlock the safe.32 downloadsupdated 5 y ago
• NNekoBaron - Rocket Fuelby Neko_BaronWe need you to fuel up this rocket with some hydrogen, and we want it filled not detonated so do be careful.31 downloadsupdated 5 y ago
• EExtreme refinementby 76561199053849755Build a sophisticated plant that turns coal into power... by burning oil! Unfortunately, you probably need to have already solved level 51 or, even better, 61 before tackling this devilishness. Dedicated to NeverOddOrEven ;^)28 downloadsupdated 4 y ago
• WWater, water!by 76561199053849755Just pour as much water as you can in the big pipe! You can use CPUs... or not. (best served with Worldwide Statistics)21 downloadsupdated 4 y ago
• SShmup!by 76561199053849755A 100% CPU level in which you (simply) have to hit as many moving targets as possible...21 downloadsupdated 3 y ago
• SSequencer Sandboxby woofmaoA music sequencer that you can build in! Editing is unlocked, so feel free to duplicate it and look at the CPU code.21 downloadsupdated 4 y ago
• CChristmas Puzzle IIIby 76561199053849755Build a (sophisticated) automatic system to sort items by quantity... A Christmas nightmare! A Zachlike delight!!20 downloadsupdated 4 y ago
• AA Lab Escapeby 76561198864844490This is a level that is probably far too easy. Have fun! The first in a series. (but probably not)20 downloadsupdated 3 y ago
• AAutomatic Raindropsby 76561199053849755Automate a robot to catch the drops... Optional challenge: find the shortest code!17 downloadsupdated 4 y ago
• AA Lab Escape Part 2by 76561198864844490Finally, after 48 gruelling hours of anticipation, this sequel to the unparalleled level: "A Lab Escape" is available to it's many fans worldwide... The creator of this level has ensured the following: 1) This level will be at least 2x as fun if not more than the previous level 2) The level will...12 downloadsupdated 3 y ago

28 solo mods, most downloaded first. Each one has its own page here with what it needs to run and where its author publishes it; the files themselves stay with the author and are never re-hosted on this site.