Well, Is nice! Maybe some music could help and do the game funnier
This reminds me to old cellphone games, y'know, java games.
It's simple, but, nice.

I really got into the vibe of digging around looking for ores. It was like mining endlessly in Minecraft, which was a lot of fun! I wished after a while that I had a counter that would tell me how many ores I had collected. I'm not even sure if I'd need to be able to DO anything with my collection, but after playing for a while, that's what eventually got me out of the zone. I also think that I struggled with the sensitivity of the drill - I often accidentally drilled a block I wasn't intending to drill, or did two at once. Just made it a little hard to conserve fuel, especially in the beginning. But overall this was SO much fun and I can definitely see myself trying to rack up a lot of ores here! 

This is pretty ok for something you made in one day. It was just a bit difficult to know if there was any strategy behind finding ores/fuel. The game felt like mindless digging for me, but I can see it becoming something interesting if you put more time into it.

Is there a bottom? I never made it to the bottom! For real though, I enjoyed it. Nice work.

Nice :)

Really like the game! A cool direction might be to have cave ins or falling blocks like Mr. Driller

Awesome!

Cute! keep it up!