Grey goo first impression

I know I'm late.

So I just tried this game I got for free and it look a good game but not enough for me to play it for now since I got other games to play right now. I guess I'm more seeking for ultra good product and don't have the time for the rest of the game that are good too like this Grey goo. Maybe if I get some spare time I could try to beat the campaign.

More, it look like a generic RTS and everything make sense. Nice new theme and the game really work well for the 20 minutes I've try it.

 Edit: One gameplay flaw so far.