Total Annihilation - This game was ahead of its time when it came out, so I don't know why people frown on it for being older than Starcraft. Only two sides: The Arm and The Core. Only two resources: energy and metal. That's where the simplicity ended. As the Commander, you could do anything from attack enemy buildings or defend your own to building military structures and reclaiming parts of the landscape to help with their construction. It was quite innovative and offered hundreds of units and buildings, whether on land, under sea, or in the air. I'm pretty sure that everyone has their favorite method of going about and kicking ass in this game. My big thing as The Arm was air superiority. I would make a whole mess of Brawler gunships and have them patrol the skies or make surgical strikes on enemy resources. Anyone in their way would be WRECKED very quickly. It was the originality and sheer scope of what you could do in this game that made it so fun to play and I still find fond memories of it.