This game is great, and I remember seeing it on the store back in 2005. Back in those days, my computer couldn't even RUN the ♥♥♥♥ing thing. Seriously, I got engine errors.
What I'm trying to say by saying that it came out in 2005 is that this game has NOT aged well. Graphically, it's fine. Infact, the graphics are still very appealing and I like them. Technically, it isn't good. The game forces Vsync on, and not only does it cause input delay, it also causes serious mouse issues. The mouse is really glitchy and jumps around a lot. Force disabling Vsync in your graphics card's control panel helps alleviate this issue. It does not FIX it, it just makes it bearable.
On the gameplay side, you control little dudes called "Darwinians" and you're fighting back a virus. There is no resource aside from "souls," which drop from your Darwinians and the virus monster that you kill. There's also a "task manager," which means you can only have 3 to 5 (depending on your upgrade progress) 'programs' running at once. Programs include things like armored units, 'engineers' (workers who collect and process souls), and armored tanks. Oh, contrary to what I said: you cannot directly control a Darwinian, instead you control them through Officers, who give basic orders like "go over here," or "follow me." The game's AI does the rest.
There are a few SERIOUS gameplay elements that annoy me a lot. The upgrade system is time-based, but once you get an upgrade, you keep it forever. However, the upgrades take FOREVER to finish. No joke, I think upgrading a system to level 3 takes something likes two full HOURS of real time. Despite this, you can still play the game normally and the upgrades work in the background. Each mission can take about an hour, so you don't really notice the time, especially if you're going for 100% objective completion.
The second serious complaint I have is a monster called a "Soul Eater," or something along those lines. I just called it a "dragon" because it looks like a dragon. This monster is pure luck to kill. You have to kill it with explosives, but rockets don't hit it, only grenades and air strikes do, and only when the monster is near the ground. It's pure luck if the monster is actually near the ground when you launch your explosive. These monsters can also one-shot every unit you can create, which means they slow the game right the ♥♥♥♥ down. I hated fighting these guys. The only tactic I found to be effective is to switch to rockets, and have my squad suicide by shooting rockets at themselves, hoping it does some damage to the dragon.
Besides these two complaints, I love playing this game. It's slow-paced and casual, but still very enjoyable, especially if you like RTS. It also has its own hectic moments, as well.