Space Engineers was announced on September 9th by the developers, and it looks like a possible life-suck of immense proportion. From their announcement:http://www.spaceengineersgame.com/
Space Engineers is a sandbox game about engineering, construction and maintenance of space works. Players build space ships and space stations of various sizes and utilization (civil and military), pilot ships and perform asteroid mining.
Space Engineers utilizes a realistic volumetric-based physics engine: all objects can be assembled, disassembled, damaged and destroyed.
Space Engineers is inspired by reality and by how things work. Think about modern-day NASA technology extrapolated 60 years into the future. Space Engineers strives to follow the laws of physics and doesn't use technologies that wouldn't be feasible in the near future.
It seems based off their recent title Miner Wars 2081
, which is why the assets and in-game content look so polished for a pre-Alpha title. Space Engineers looks like it takes that earlier space shooter foundation and makes a ship/base-builder sandbox out of it.
The best way to understand is their announcement trailer. Fom what I understand, this is working code that will be expanded upon once they get some community feedback. It has serious potential, looking at the footage:http://www.youtube.com/watch?v=R3b9e_KWO-I
An in-depth blog post about the project, from the lead dev, Marek Rosa:http://blog.marekrosa.org/2013/09/space-engineers-announced-development.html
It's out! $14.99 on Steam Early Access! Hooray!