Needs more level ups...
It was fun and calming with the music and overall feeling.
But there were 2 issues that killed it for me...
1: there were only 8 levels...
2: once you got the first drill, it was too easy to level up.
i started to get bored with it once i got to level 8 (which i got to before the second boss) And that takes alot of the fun out of it when you're maxed out and can just mash on the drill and fire buttons and just dodge the red rocks.
but hey, it was very interesting! and it kept me transfixed for a while!
(until i maxed out and beat the second boss.)