Been spending my free time, what little I have playing Tribes:Ascend. It's tons of fun and worth checking out considering its price tag is $0.
Its the kind of game you can play with out paying but you do get an EXP bonus for purchasing game gold. I haven't really found a need for the gold yet since I just play one of the default classes but to each is own.
I get referral bonuses if you sign up for an account using this link. If you played the original tribes (forever ago) its a lot of the same game with the "Skiing" actual being a functional feature instead of a bug: https://account.hirezstudios.com/tribesascend/?referral=2201857