This is a super creative concept, and some of the best presentation I've seen in the jam! Definitely stands out from most of the other "roll the dice around" games.
Unfortunately the game took me way too long to get the hang of. I played through the first few stages thinking that the rock-paper-scissors matchup was using the *bottom* face of your die (which seems more intuitive to me personally, since those faces are physically in contact with one another) so I was really confused as to why it wasn't working the way I intended (the title screen doesn't specify that it's the *top* face used for matchup.) Additionally, the way the cross pattern is arranged, it makes it look like the "front" face is the face facing towards you, when in actuality it's the face to your right? The designer has the board tilted 90 degrees from what the cross displays.
Even once I did understand how to play, the level of spatial awareness necessary to properly plan out your dice is quite demanding. I wonder if there's a better way to visually represent the dice plan. I think having the cross mapped to a cube that you can turn around in real time while building your plan would help a ton. Also I feel the amount of hearts you get trivializes the game, as you can usually brute-force your way through a level even if, like me, you don't even fully understand how to play :P
I know that sounds like a lot of criticism, but I really do like this! My problems with it are purely in the way information is conveyed to the player. I think with a few tweaks in that regard, this could be a really solid puzzle game!