I'm not quite 30 but I have been going through the whole lack of motivation/time for games thing for the last few years. I haven't completed many games at all but Satellite Reign has me gripped at the moment. I think it's possibly a nostalgia thing because it really does feel like a Syndicate remake... I'd urge anyone who liked those old isometric tactical squad stealth/action games to give it a go.
I also have Doom to play through at some point.
I also have Doom to play through at some point.