Very cool mechanic! Although the dice doesn't seem to follow the theme too much, due to how it can be easily replaced with another object to indicate the powerup - as for the RNG nature of the dice, it wasn't really implemented since the dice pickups' value are static. Also it's a shame that there's left over potential for the other dice blocks (number 5 isn't really used for any level in a meaningful way for example), but probably that's due to the time limit.
The art and sounds are cute! Really love how it feels playing through the levels.
By the way, I am really fond of the game's itch page. The design matches so well with the game's art.
I would love to see more of this game, if you do decide to expand it. Really neat game overall!
P/S: I couldn't give live commentary due to not being able to stream, sorry