You may want to turn down your volume. BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

A variation on a test chamber from the singleplayer campaign, the one designed by a nobel prize winner. This one is harder, but in the same spirit. BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

Gel looks super bright when it's on light bridges. If you die and respawn and there is no gel on the light bridge, or if you accidentally get the blue gel on the light bridge, press the button by the entrance. BONUS CHALLENGE: Bring the optional companion ...

A simple puzzle involving cubes and emancipation grills. BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

Learn the arcane and controversial art of portal bumping! 1. Shoot a portal next to the glass 2. Shoot your other portal on the side of your existing portal which is closest to the glass If done correctly, you will now have portals on both sides of the gla...

Deadly Lasers get a bad rep just because they're deadly. It turns out, if you don't touch them, they're actually pretty cool! In this map you get to select the order in which to reason about lasers. The theme of this map is bootstrapping. BONUS CHALLENGE: ...

This one is pretty simple - just bounce around to the exit. BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

Sure, it's easy enough to get the door open, and it's even easier to get to the door, but doing both at the same time requires some thinking. BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

A fun confection for the whole family! Cake not included. Icing sold separately. A two-year support contract is required before any candles may be lit. Other terms and conditions may apply. After feedback from many test subjects, I abandoned the layer cake...

If you don't already know what bootstrapping is, you will by the end of this map. BONUS CHALLENGE: Bring the optional companion cube to the exit <3 Everything with signage instead of antlines is related to this challenge. Having trouble with the last puzzl...

Note that the light bridge does not stop you from flinging. Not recommended on a controller. Check out BatCat's remake! https://steamcommunity.com/sharedfiles/filedetails/?id=766067046 (based on an older version that Prototype broke) BONUS CHALLENGE: Bring...

This is a hard map I made while I was sick. So maybe it's easy and being sick just makes it seem hard? You tell me. BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

A simplified version of the final puzzle from Bootstrapper. Also a device you absolutely need to have in your home in the 22nd century. BONUS CHALLENGE: Bring the optional companion cube to the exit <3 Bootstrapper is another puzzle I made: http://steamcom...

More bootstrapping! Now updated to have less of everything! Except bootstrapping, of course - it still has twice as much bootstrapping! BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

Based on the original by Solid Jim & DeathWish808: https://steamcommunity.com/sharedfiles/filedetails/?id=505058903 (deleted) I was watching back RectorRocks' playthrough of my map Raise the Bar, and I noticed something I hadn't before. In honor of that so...

Alright, this next test may involve trace amounts of time travel. So, word of advice: If you meet yourself on the testing track, don't make eye contact. Lab boys tell me that'll wipe out time. Entirely. Forward and backward! So do both of yourselves a favo...

Inspired by "Stargazing", but for people with poor eyesight. BONUS CHALLENGE: Bring the optional companion cube to the exit <3...

In this puzzle, you need to have faith in your abilities. Inspired by Libbybapa's map "Free Beer!", though the puzzles (and difficulty levels) are quite different. I can't believe I actually have to say this, but no, this map does not require cube throwing...