Mechwarrior Online is being made using CryEngine 3, Crytek has announced.
The Piranha Games-developed free-to-play title is built using the same engine that Crytek used to make Crysis 2.
MechWarrior Online is the first full entry in the combat series for nearly 10 years. It's due out on PC in the second half of 2012.
You control a BattleMech during the early stages of a future interstellar war.
Crytek said 2012 will see free-to-play games "step up to offer true AAA quality to gamers".
Crytek is using CryEngine 3 for its own free-to-play game, Warface. More than 20 CryEngine licensees are using the engine to make free-to-play games, it said.