The game is decent, and it's fun for a while. You basically have five levels filled with pegs where you drop balls to mine ore, earn points, unlock upgrades, and craft new types of balls. There's nothing particularly new or unique about it, but it is satisfying to watch the balls bounce around the pegs and eventually land in a 4x multiplier zone.
That said, the game is very grindy. Just the demo took longer than I was hoping, and I didn't even unlock a fifth of the full game. I can't really imagine playing a game about dropping balls onto pegs for hours on end. Unless it's aimed at a very specific audience, it starts to feel repetitive fairly quickly.
It's also a bit buggy in its current state. Quite often, balls would get stuck, or they would fall off the board but the game wouldn't register that they had fallen, forcing me to press "End Turn" to continue.
The idea is decent, but I think the execution can be improved.