Adequate challenge, smooth graphics, good sound. A very solid game. And please ignore any naysayers who give you flak about "it's not scientifically accurate! *whine point whine* OF COURSE it's not science. It's a game. A damn good one.
Do you actually understand atoms and what they are made from?
very fun nice sound and great gameplay
I must know the music you use in this. It's so peaceful.