Good Game, could be improved though depth of play.
I liked the way most of this game was set up, The arcade play was pretty good survival is fine, but you always die at the end which is kind of a downer, just the nature of the beast.
It was disappointing that build times corresponded directly to cost, so you could never have a use for more than a specific rate of resource collection. If there were some way to have additional queues that can be upgraded to, or some that would shorten the build time, or even just some really expensive unit that builds comparatively fast so that you don't end the game with 8 queues and 1,000 mineral.
The Units also could have been more unique, there were no apparent advantages or disadvantages to any specific unit, they were all pretty much the same except bigger. If some units had really good range, or otherse were really quick, the game might be a bit more interesting as players would be force to come up with creative methods for deploying their troops. As it was, you basically sat back on the defensive until you had a force of overwhelming size which would happen after the first computer attack, and then you would go ape scad on them.
Multiplayer would be interesting, but I'm pretty sure the game would get broken pretty fast in the state that it's in. The units simply aren't dynamic enough to present serious cerebral engagement, but that isn't hard to fix, a few attack bonuses for certain unit types, some changes in speed and range between class and you might have a very interesting game.