Starcaft series!
Warcaft series and diablo series. I think that w2 deluxe edition and w3 ce are two diamonds for any collector. Also happy for diablo though i am missing diablo 2 ce.
The big four... sadly i was a wow player from day one. So many hours wasted. Luckily i didn't continue on wrath and cataclysm which are both sealed.
Classic CnC era, red alert in ce and the rest good old big boxes with lots of stuff.
CnC after westwood's departure, red alert 3 and cnc3 in ce.