The gameplay itself is a bit repetitive and not there's no real chance of dying. However, the smoothness and lovely graphics (simple but attractive) make it a nice game for how long it lasts.
I enjoyed the game, pretty simple but everything worked the way it should be. (Only it says 'buy 5 depots' but only gives you one, small error.) And you might wanna consider some kind of 'huray you won' and/or 'aw to bad you lost' message at the end :)