cry engine 3

Crytek GmbH (Crytek) is an independent interactive entertainment developer founded in 1999 in Frankfurt am Main, Germany. The company has several additional studios in Kiev (Ukraine), Budapest (Hungary), Sofia (Bulgaria), Seoul (South Korea) and Nottingham (UK). The company is dedicated to create high-quality video games for next-generation consoles and PCs with 3D-Game-Technology CryENGINE ®.

Recently announced they will release an all-in-one game development solution CryENGINE 3 for free for non-commercial use. CryENGINE SDK you can download for free on crydev.net that will continue to update it.