Originally Posted by Xeris

A.) Its not modern its Scifi. The game takes place on other planets and some zones feature Alien Vs. Humans and operable Mechs.

B.) Free Infantry had a few zones and the older one sucked even more, but the ORIGINAL Infantry (Even though Harmless Games owned it.) is now free again.
www.infantryzone.com

C.) If you want to be technical; Infantry came out around 1998 or so; so Team Fortress is like a 3D Infantry.