AOE and AOK definately rank up at the top just for bringing me to the RTS genre. I never played AOM much, and I found that EE sucked after about a month (Too complicated, boxy graphics, lack of atmosphere, crap editor, highly unintuitive). I'm not financially strong enough to make purchases nowadays (I spend more cash on music CDs. Incidentally, does anyone here like NOFX?). I always liked Impressions' city builders. Caesar 3 was pretty good, and Pharaoh got me totally hooked for days on end. I never played Zeus. And Emperor: Rise of the Middle Kingdom must be one of the most awesome games ever. Until it starts getting repetitive anyway, and you can always go multiplayer after that.