i thought the first one was kinda fun because it was in the 50's which isnt very common in games and it matched the whole aliens/area 51/roswell idea to the game. but the second one was more fun, alot more missions to do, way more (and different)places to go. possibly funnier than the first 1. overall i would definitely play them both, in order.
i like 2 more couse it has cooler weapons like the meteor shower which destroys about every building, and has more upgrades and u could go to the moon which is very cool. So i choose 2
