Earth: Year 2066 was not a good game. Sure, it was still an Early Access release but it was disturbingly bad even for that stage of release. It didn't help that the developer constantly deleted threads and posts from the Steam Community section for the game.

Chris, an employee at Valve, stepped in today to announce that they are issuing refunds to those who purchased the game and have pulled the game from Early Access.
On Steam, developers make their own decisions about promotion, features, pricing and publication. However, Steam does require honesty from developers in the marketing of their games.

We have removed Earth: Year 2066 from Early Access on Steam. Customers who purchased the game will be able to get a refund on the store page until Monday May 19th.

Now, if you are still at a loss as to why this game was pulled and why there was such a stink made about this game and the developer, then you should watch a recent episode of Jimquisition to give you a much better understanding.

Trust me, you'll understand perfectly once you watch this.

Oh, you still want more? Well, this Reddit thread goes into detail about how the developer, Muxwell, has been scamming people not only with Earth: Year 2066 but with other titles as well. He even stole images off of Google's image search to use for promotional materials of the game.