Just to Clear Up the TF2 Issue
This will hopefully help people understand why TF2 isn't on iOS and costs $5. If you think RE is being greedy with TF2, please read the rest of this post. :)
Since people still complain about the $5 for TF2 deal, let me make it clear that this is NOT robot being pay-to-win. This is Valve(creators of Steam and TF2) getting their share of money from intelectual property rights. Valve won't let robot move thier(Valve's) team off of Valve's platform(Steam) because then Valve woudn't get any money from the purchase of TF2. However, RE(robot entertainment) tried to make it easier by releasing it for Mac and PC, so virtually anyone with it on iOS can get TF2. You pay $5 (I'm guessing: 3$->RE 2$->Valve), you get $10 value. ($2 team, $3 TF2 avatar pack, 2x $1 council avatar pack, $3 council avatar pack; 2+3+[2*1]+3=10) So RE gets >$5, and you get $10 value... you aren't getting ripped off, if anyone, RE is.
On the issue of pay-to-win, TF2 can be beaten by other teams, there are lots of games where someone who doesn't pay CAN'T win, this isn't one of them.