One of the best underrated multiplayer games. And it's ultra low spec.
Best part of this is the football. You got football played with planes and you can't underestimate how good that is.
5 different planes add some good depth to it.
If you're a beginner- it's worth finding a football server with bots, and learning how to pass and all that. Also there's a good fun tutorial prepared by altitude.
Most common server is 14 people, and sometimes the skill level can be quite high. In which case be maybe a bit prepared for some grumpy players especially if you don't know which direction you're going, don't know how to pass, and go for enormous kill counts and neglecting the ball.
Otherwise, enjoy one of the most underrated multiplayer games on the internet, and which is free as well.