Frontline is a game developed on the Unreal 3 engine.
To be honest, I don't think the inclution of a human vs. alien-scenario should be a consideration when choosing an engine. For me, Infiltration is about realism in a realistic enviroment. That's (again, for me) prio 1.
Then, when everything else is in place, if someone wants to do the human vs. alien-thing, sure.
Ok, so whose brave enough to go map Europe out for us? Granted it'd be a PITA to drive from Germany if the fighting is in Spain, but we'll just have to implement some sort of AI controlled transport aircraft.Just found out that the largest Crysis map size possible is
or around the size of Europe