Quantum Conundrum, the puzzle game coming from Portal co-creator Kim Swift and her team at Airtight Games, is now available for pre-order on the PC platform, via Steam, in two different versions - a standard one that includes just the game, and a Season Pass one that includes the game, its soundtrack, and free access to the two DLC packs planned for it.

While Portal may be the work of Valve, the original idea was shaped by Kim Swift, who has now partnered with Square Enix to release Quantum Conundrum, a downloadable puzzle game that’s out for the PC on June 21, and for the PS3 and Xbox 360 consoles this summer.

Pre-orders for the game are now available via Steam in the form of a standard edition, which includes just the game, and a Season Pass version, which adds the title’s soundtrack and access to two future DLC packs that will be released in the near future.