It's a good game but they say that after the game is completed once I can get additional points by collecting rainbow thingys, but if I do a level again and get a rainbow thingy I didn't had the first time I don't get additional points.
This is a great game but with badges like: Easy: 3 lands conquered, Medium: Game completed, Hard: Win game with Nagako and without building Samurais, Snipers and Ninja's.
This game is so good I guess these kind of badges will be one of most awarded badges.