No Man's Sky
We were blown away by No Man's Sky's initial presentation at the VGX event in 2013, and its developers have shown no signs of slowing down their development of the game despite facing a few setbacks (their offices were inundated by floodwaters in 2014), vowing to release the game in 2015. No Man's Sky promises to offer a universe full of procedurally generated environments for players to travel to and explore to their heart's content.