Defense Grid

[iviv]

Just seen this flash up on steam, and I'm a sucker for Tower Defense games, but has anyone here played it, since there's no demo available, though it seems to be getting a generally positive response from the steam forum.

Anyone here tried it?

 

[uv]

http://forums.overclockers.co.uk/showthread.php?t=17948987

I won't be buying any game >£5 that doesn't have a demo!