TF2 is the indisputable king of "hero shooters" and the one that every other game in the genre wishes it could be. Even running on an engine as old as dirt and going 5+ years without a major update, the game is still as fun as ever thanks to it's amazing community building upon the nearly perfect foundation Valve set a decade and a half ago.

Phenomenal fighting game. Fun characters, tight controls, amazing soundtrack and an insane level of cusomization. Struggles with a dated netcode, harsh learning curve with little tools in-game to help (why is viewing frame data locked behind DLC??), and lacking single player content.