The game has a great concept but really lacks polishing on the visuals, which turns the experience less enjoyable, for me at least. Maybe if you had gone for a solid colors or unlit art style it would get better results with a nice balance of productivity, I get it is a prototype but I would like to point that out still.
I like the premise of the game, it has a great foundation for expansion, like finding upgrades or even consumables, the upgrades are a nice addition and makes a nice difference. The core of the game is present, you just need to make it more interesting and a little bit more strategic, I like that you have two different types of holes, but as the game progresses and the oxygen gets A LOT more expensive, what I found myself doing is just digging the white holes in hopes I would get a treasure instead of a bomb, and digging the brown holes gives too little so it's not worth and I just ignored them, that isn't very strategic, is pure luck. Maybe a system or upgrade where I can scan or reveal treasure holes would be a nice addition.
I liked the music on the game, but the alien-like sound that was playing over it was super obnoxious, I don't know if it was put there to give some sense of danger or mystery, but for me it just spoiled the nice music on the background.
I still don't get why I can't go backwards.
Overall it's a nice game, just needs more polishing and thought out art style and identity. Congrats on the submission!
If you have the time, we would really love for you to check, rate and give feedback on our game too, thanks!