http://www.minerwars.com/Index.aspx?video=1
Exactly what it says on the tin.

Hmm, I do need to try that out again. I tried one of their demos a couple years ago and it was cool then, though pretty sketchy. I tried another one maybe a year later and it didn't like my new graphics card. Haven't poked at it since, though I've been meaning to lately. I definitely like the idea of big roids you can tunnel through. Any game that lets you dig tunnels gets automatic bonus points in my book.

I like the dynamic environment idea, might have to try this.

Those are the most heavily armed SCVs I've ever seen.