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I’m not a fan too of this type of game especially crash type games because it gives me uneasy feeling every round.
The only original games that I like on Stake is the Blackjack and the card collection game that I share here before because it’s relaxing to play.
The rest is just what you said that is repeated game with different animation.
Well, it is true, but we also can't expect much different. There is a set of templates for games that have proven to be the most popular and also where the house gets the edge, and also creating one from scratch will requires a lot of money and time and it's not the job of casino that is why they always leave it to the gaming providers and casinos will just focus on the business side of it.
Sometimes even a small change in the animation can give a fresh look so it's not a complete waste to have few variations even though the concept of the gameplay is just the same.