All right! Replaying the game not as tired like yesterday was much better :) So yes i got the point of getting more and more limitation with the skulls and makes sense so it limits the user choices which might be too big after some time. I have found another kind of placement thought which i was not sure why i cannot have (see above). Why i cannot place the 4-1 between the two 4s? (not intentional but you see the bug is hiding some important detail :) under the bug we have 4 too). Maybe limiting instead of skulls it can be a map or a dungeon kind of thing where you can continue to expore and maybe bigger / smaller rooms are available that would be maybe more interesting and get the same effect as skulls? Anyway really cool game.
Yeah, for the first pick you can't place on that spot so that the 2 would be pointing up or down. It is indeed intentional design limitation mainly because I wanted the bone rotation to be automatic based on the placement and if that one spot allowed three different rotations, it would require user to rotate manually. And btw, even if you had placed it pointing down on that spot, connecting that to the other 2 wouldn't be allowed either as it would make the bone sides touch.
Kinda same with that other picture and the double 4. Could place it there if the other side had a bridge to link to though. Understandable that these limitations can be frustrating especially since I guess they aren't obvious to anyone else besides me. But on the other hand, limitations also bring up the need for better placement planning and hence raises the skill ceiling.
And the tutorial dude dodges mouse cursor so you can always shoo them away if it's covering something...