A free Windows demo version of the first-person puzzle-platformer Vitrum is now available at developer 9heads Game Studios' website.

In Vitrum, players obtain new abilities and power-ups from colored crystals in order to traverse challenging platforming sequences. The video above demonstrates the concept -- blue crystals make your character dash, for instance, while orange ones reverse gravity. Some of the level layouts seem quite tricky!

Vitrum is also up for vote at Steam Greenlight.