Caesar III
Pharaoh
Zeus: Master of Olympus
Emperor: Rise of the Middle Kingdom
Age of Empires I
Age of Empires II
Plus around 1000+ casual games like Burger Shop, Burger Shop 2, Turbo Pizza, Turbo Subs, and other small games. Nothing major/big actually.
2D strategy and casual games. Or very, very old 3D games if you are lucky. Then again, there are Flash games as well, they should run fine too! And of course, old DOS games come to mind as well, there are some great games and series from that period. Doom, Blood, Wolfenstein 3D (the original, oh my!), Dave, Commander Keen, Hocus Pocus (highly recommended, actually, classic side-scrolling platformer
), a Mario or two, etc.