Yes, the legendary Z!
For those of you who don’t know it, here’s the wiki link:
Z wiki
This is an RTS with no resources, new units are deployed automatically after a certain time via factories and barracks. The player tries to conquer as many sectors on the map as possible by capturing a tiny little flag in the middle of each sector. A sector gives the player the control over additional buildings, but it also decreases the time needed to build new units. This means the more sectors you have, the faster you deploy new units. It is fast paced, intense and a lot of fun.
Did you ever wish to play Z online on any map you could wish for with a couple of your buddies? Well, yesterday I found out that you can actually do that: the Zod engine is an open source project with a running Z engine with multiplayer capabilities, gigantic maps, map editor, etc:
http://zod.sourceforge.net/
They have a running server, and I challenge all of you to meet me there and kick some robot ass!