Not really an older game like the ones listed above, but I really enjoy playing the game Warframe. For those that don't know, imagine ninjas, third person shooters, zombie hoard modes and space all mixed into one. It's free and has a lot to offer gameplay wise.
No this isn't an advertisement.
Anyways IF you wanna try it out, if you use my referral link you can get 7 days of xp boost (it helps a lot).
https://warframe.com/signup?referrerId= ... 656a000033P.S. Really reluctant to leave that referral link down, I hate referrals.
Cheers,
Orange