[Rangel(kf7fdb)]

I think it will be about collecting coal and water(game pieces) and depositing them into an engine(Coal below and water way up above). Though it's a wild guess, I think it would be neat if there were two piles of water and coal along with buckets filled with game pieces with a rule saying you can only move and score game pieces using the buckets. Thinking the endgame has something to do with minibots and a blimp.