This is a brainteaser map - thinking with Portals required! - estimated difficulty: very hard (logic based puzzle) - estimated blindrun playtime: 120 minutes (or more) - no ninja skills and no strafing needed - no bugusing, no glitches, no hidden things - ...

This is a brainteaser map - thinking with portals required! • estimated difficulty: very hard (logic based puzzle) • estimated blindrun playtime: 90 minutes (or more) • no ninja skills and no strafing needed • no bugusing, no glitches, no hidden things • y...

This is a brainteaser map - thinking with Portals required! - estimated difficulty: very hard (logic based puzzle) - estimated blindrun playtime: 80 minutes (or more) - no ninja skills and no strafing needed - no bugusing, no glitches, no hidden things - y...

This is a brainteaser-map, which requires teamwork and thinking with portals. You have to think twice. Features: - 2 medium-sized rooms - teamwork required - thinking with portals required - you may have to think out of the box - no ninja skills needed - n...

This is a brainteaser map - thinking with portals required! Map has been updated on 14. August 2017 • estimated difficulty: medium/hard (logic based puzzle) • estimated blindrun playtime: 40 minutes (or more) • no ninja skills and no strafing needed • no b...

This is a brainteaser map (very hard logic based puzzle)! Thinking with Portals required. - estimated difficulty: very hard (logic based puzzle) - estimated blindrun playtime: 60 minutes (or more) - no ninja skills and no strafing needed - no bugusing, no ...

This is a brainteaser map - thinking with portals required! Map has been updated on 9. August 2017 • estimated difficulty: medium/hard (logic based puzzle) • estimated blindrun playtime: 60 minutes (or more) • no ninja skills and no strafing needed • no bu...

This is a brainteaser map - thinking with portals required! Map has been updated on 7. August 2017 (2nd puzzle added) • estimated difficulty: medium/hard (logic based puzzle) • estimated blindrun playtime: 35 minutes (or more) • no ninja skills and no stra...

The entire map-series has been reworked and updated on 29. June 2017 This map uses a companion cube shuffle puzzle to create some awesome teamwork. estimated difficulty: medium Don't worry if you lose your portals or die by accident: You only have to solve...