HEAT Online is an edited and improved version of well-known MMORG - Project Torque. New version, from Innologin LTD, will contain plenty of improvements but for the full list of those, we'll have to wait at least until open-beta stage, upcoming next tuesday (August 17).
As for an ordinary player, HEAT Online might be a great alternative for semi-f2p NFS:World. Creators guarantee that there will be no subscribtion fee and that nearly every item in in-game shopping mall can be bought for points earned by playing.
Official website: