All of the time spent on this game has been playing a mod called Movie Battles 2, Which is what I consider one of the best star wars games ever, which is horrible considering its a free mod.
This is the best space RTS I've played and is really fun to duel friends on, its campaign is eh but its skirmish mode is super fun, trying to take over the galaxy has never been so easy!
Despite my large amount of hours in this game i don't have much to say about it. Its counter strike, its fun for a bit but I'm not the biggest fan, i just had a phase.
The best Portal game, fantastic writing, fantastic music, fantastic everything, my only problem is after playing it so many times I've memorised all the puzzles but there is the workshop for that!