I have been working on a game for the past few months and am now close to releasing it (about a month) for free in it's alpha build.
The idea is to survive and explore an infinite 2D world, and build a civilization from the ground up. It will be very similar to Minecraft and Terraria in the sense that it requires the player to gather resources/create tools, but at the same time It will take a step up as the player will bring NPCs to life that will expand the ability to create. The worlds and player-NPC interactions will by dynamic and encouraging for an an enjoyable, and entertaining game-play.
I will continue to update this thread as long as I have updates for the game, but if you take interest in this game you can also check out it's blog (which has more frequent updates) and follow me on twitter @Kwauhn.