Where to start
1. Team Fortress and Counterstrike are Half-Life Mods. Not games.
2. Team Fortress 2 and Counterstrike Source are Half-Life 2 Mods. Not games.
Neither are a "series", and I would hardly call a "series" - 1 game with a sequel.
Why isn't Half-Life included in the vote, instead of the Half-Life Mods?
You may as well have just listed every single Half-Life Mod ever, and called it a "series".
/
And that's not even the main problem with this vote.
Where the hell is Quake?
The best FPS game ever made isn't even present as a choice.
/
Because of this, I had to vote for Battlefield.
But, if this vote was actually any good, The Quake Series would win with 100% of the vote.
/
PS. WTF is MAG, and why are Killzone and Halo even options in this vote