Top 10 Free-To-Play Games on Steam?

I'm wondering what the community thinks as I'm going to be making a video on it. I made a little form on Google Docs that'll take you under one minute to do, please consider doing it and if you do thanks very much for helping! :D

Clicky

So if you saw the form it had checkboxes to mark your favourite games on the list and allowed for you to choose more than one if you liked more than one game equal, so here are the current results after 373 responses. The first number is the amount of votes that particular game received and the second is the percentage of total votes that went to that game. For those who haven't seen the form, the Other category let you type the games that you thoroughly enjoyed that you didn't see on the list. These consisted of a very broad range of games, with each one getting no more than 5 votes.

Dota 2 105 14%

Team Fortress 2 146 20%

Loadout 61 8%

Planetside 2 48 7%

DC Universe Online 9 1%

Hawken 28 4%

Spiral Knights 18 2%

Warframe 50 7%

War Thunder 38 5%

Blacklight Retribution 27 4%

Real of the Mad God 20 3%

Path of Exile 85 12%

RIFT 25 3%

Frontline Tactics 3 0%

Star Trek Online 10 1%

Other 57 8%