Online mode in Fall of Man is very addicting and rewarding. You have enough game modes to keep you interested and have something for the most picky FPS gamer. Meltdown and Team Deathmatch were my favorites. You can also play Breach, Capture the Flag, Deathmatch, and Conversion which is a last man standing type of game.
You can also play offline 4 player matches as well as a Co Op offline campaign mode. I would have loved to play a Co Op online Campaign mode and wished it was added to the re-release of the game.
DLC was created for Resistance and had 2 additional Map Packs released. Each Map Pack added 2 more maps and were available for $8 and $5 respectively. After the release of Resistance 2, these Map Packs were available free.