$0.99 now free.
Pretty turbulent with prices, first came out at $5.49 > $2.99 > $0.99 > $2.99 > $0.99 > free and whatnot. May as well grab it, could be worth $5.49 again in the future.
Looks pretty good, might get it myself.
A 90.5 MB download with 4/5 ratings.
just judging from the comments it seems that this game requires you to pay for upgrades to be competitive