A very interesting idea! I think the rules wording needs some improvement: I thought “red neighbour must be larger” means that when you place a new dice, it’s red neighbour should be larger than the dice you placed, and similarly with the blue neighbours. Took me quite a while to figure out that it’s exactly the opposite! The rules in the game description are pretty clear btw, it’s just the in-game rule description. Anyways, interesting concept, enjoyed it, good job!