Got a new(ish) pc. Any free game recomendations?

Ahoy <--- sailer/cookie term

 

I just got my cousins old pc (AMD athalon dual core 2.5Ghz, 4Gigs ram, GeForece 9200. its one of those prebuilt deals from acer. it was given to me free, and a vast upgrade over my old dell, so im not complaining) and am totally new to pc games.

I have kept up as much as i can, as a spectator, but new as in "actually able to play some" lol. last pc games i played (ROMS not included) were dune 2000 and Command and Conquer Red Alert/Red Allert 2/Tyberian Sun

the PC already had LoL on it, so i have been playing that. tried Warface, but the framerate was unplayable. 

Can you guys recomend any free games i could try out while i am currently without currency?

i like pretty much anything, other than MMOs. it would really help for free games that also run well on older hardware. LoL plays fine, but that isn't that much of a taxing game. Planetside 2 on the other hand.... Hell.... i wouldn't be surprised if i wasn't even able to handle the menu screen lol

 

Any help would be greatly appriciated. thanks in advance!

 

Tf2 thats loads of fun.

Try War Thunder. 

i totally forgot about TF2 lol thanks. War Thunder ay? -takes a quick look-  hmm... ill look into it a bit more, but im not a huge fan of dog fight games, unless they are star wars XD

Gotta go with team fortress 2

UPDATE: just made my first steam account lol

Better late than Never? ;P