Battlefield 1942: Secret Weapons of World War II (Mac Games, 2004)

This game has lots of cool additions that the original 1942 does not have...sweet new weapons, better maps, better multiplayer servers. My favorite item is the jet packs that allow you to fly in the air on top on enemy buildings and tanks. The silent machine guns that British EMT's get and the German semi-automatic sniper rifle are also pretty fun weapons. The least you can do is download the demo (but make sure you get the right windows or mac version)!