If you loved the Portal games (who didn't?), you should definitely pay attention.

Airtight Games and ex-Portal designer Kim Swift are currently working on Quantum Conundrum , a downloadable title that focuses on puzzle-based first-person gameplay…sound familiar?

Swift leads us through an 8-minute walkthrough of the gameplay and as you can see, this game features much of the complexity we found in Portal and Portal 2 . There are laser beams that need bypassing, switches that need pressing, and objects that need getting. The different dimensions – like the one that makes everything "fluffy" – lies at the core of the experience.