Year 2037: A hacker has infiltrated the Aperture Science Orbital Station and sabotaged the central system. You can no longer reach the observatory and the system that controls the central shuttle has been disabled for security reasons. No human being can i...

Well, you might have played Gelocity 1 or 2. So you will know what this is about: This is NOT a puzzle, it's a race track covered with orange speed goo. You have to run, jump and portal your way through the course and - like in Gelocity Stage 2 - you can s...

I have now released a new level called 9 Lives, try it out! Part 7: Revenge of the Turret About the map pack: This map pack consists of six maps with two puzzles per map and one intro map. Every map has a different theme and puzzle element. I have tried to...

v1.1 ----- 2 chambers map in the overgrown style with increasing difficulty level (medium-hard). Custom soundscapes by josepezdj (all sounds referenced in them made by VALVe) Custom skybox from CS:GO (VALVe) Thanks to Greykarel for beta-testing. ----------...

Hakuna Matata - "no worries"; - estimated difficulty: medium - no ninja skills needed - you do not have to die to solve this map - if you lose your portals, it is easy to get them back If you need any help in solving this map, just watch the walkthrough vi...

A thoughtful, puzzle-centric room in honor of my forthcoming grandson, Kai. Includes mild combat, and should provide a moderate challenge. Enjoy, and please let me know your comments and criticisms! :) (v 1.2)...