i don't know how the game play is going to be but there is a Stargate game coming out that if it follows most of the show should be a lot of exploring but some action too.
http://www.cheyenneme.com/games/stargateworlds/
Thats the general info but I haven't found anything on release date and such. This one I may have to give up my WoW account for if its any good.