GOG.com is giving away Total Annihilation. For anyone that has not played this massive RTS, now is the time to get it. Free for the next 47 hours.
As good as it is, Total Annihilation does feel and look a bit dated, especially since there is Supreme Commander. GOG.com has also started selling Supreme Commander Gold Edition and Supreme Commander 2, and both are on sale at the moment.
I have not played SupCom 2, but SupCom is the bigger, better and more up-to-date Total Annihilation. I really should get reviews up for TA and SupCom.