Do you like challenging games that also destroy your eyes in a glorious smorgasbord of color? Then consider checking out FEZ. If you don't already have FEZ on account of not having an Xbox 360, worry not, because the game is, as of today, on PC as well.
Hey, who ever said there were too many sweet indie titles out there? FEZ, developed by Phil Fish of Polytron (and they are really happy about the PC release), managed to sell 200,000 digital copies on Xbox LIVE Arcade between April 13, 2012 and 2013. Not bad at all.
While FEZ PC is available via STEAM or GOG, Fish was rather hoping folks snag the game off the Humble Store, because he actually gets 95% of the revenue from them, as opposed to the 70% from Steam/GOG. Another incentive is that the Humble Store version is DRM-free and includes the Steam key. Then again, Steam has the soundtrack edition, though you can also grab the music separately.