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How about this for a mini game?https://splix.io/ you know where you conquer area , problem might be that you require min 3 players or something. Else still the train thing but maybe have the train destroy blocks so you have to upgrade it etc like this https://www.topspeed.com/car-games/car-games/earn-to-die-ar127060.html

Train upgrades with diamonds are planned. =)

The next week, I'm pretty busy, don't know if I have enough time to make a unique minigame, but I will look into https://splix.io/ and check out how it could be done in Minecraft. 👍

Nice, first upgrade speed control so then you are allowed to make it % slower than max. :)

Added that to my to do list. =)