Team Fortress 2 is a free-to-play team-based first-person
shooter (FPS) multiplayer video game developed by Valve
To play you must install Steam
computer, then go to teamfortress.com
to download the game.
Steam is a digital
distribution, digital rights management, multiplayer and
communications platform developed by Valve Corporation.
It is used to distribute
games and related media online, from small independent
developers to larger software houses.