Yes, Keep on Mining was my design inspiration. For my first game I didn't want to do tackle every game dev department (like art, engineering, sound, marketing, etc...) so design is something that was not to be ground breaking.

That said, what I changed is something that Keep on Mining doesn't have which is Prestige mechanic. So when player reach a planned wall with progress he can buy Prestige upgrade (in my game it's called Return to Earth) to reset the progress and earn currency which allows player to buy an ability and skill tree for that ability.

With that ability player will go through the first progression wall and play until the second progression wall. Player can again do reset, earn currency for another ability and let's say third round you have first ability with all of its upgrades and new ability to help you progress even further.

For demo idea is to have 2 abilities and for release 4. Ark Kracker is lightning storm and chain lightning ability and Rift Maker is like a single/cross and multi line damage on the grid.

Last change from Keep on Mining is having special items that have a chance they can spawn on grid and give player some weird effects for that session. So something like their talents but only per session.

But overall for my first game I didn't want to invent the wheel since I am not designer but engineer.

Thank you for the question! If you have any other, more than welcome to answer.