Interesting game, contains some interesting things (fights, the beautiful music) and some less interesting things for me (dialogues, the weird background during the fight)
Although it's a good combo, which is worth to play.
I think, in this game evolving is expnencial. You buy only some little upgrades, but you can earn a lot of money with these upgrades and then you can buy even more, which gives you EVEN MORE money, etc., until you reach the 100,000 combo - or as many as you want.
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