I might be wrong about this, but I did some looking myself and never found any trials. The game cost me just around 15€, so not that big of a loss even if you don't end up liking it.
Yes! it seems there's no free trial available on this game, just try investing few amounts on it just to see if this game is what you're looking for. Try checking gamersloot.net just in case if you are decided to buy it too.
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I don't think there's any free trials out right now. I'd just go out and buy the game. It only costs $19.99 anyway, and the first 30 days are free.