The idea reminds me of boulder dash, but this one is a tad simpler, of course.
I am not really a fan of the "hit the red on the line to dig"-thing. It doesn't really change much if i don't hit (i just try again), so I think it might have been easier if the spacebar digged in the direction directly.

I kind of liked this game, but just a bit slow for my liking (then again, I am impatient...) that's a good, simple idea!

Just as @schnüt said, I'm not a huge fan of the red bar either, but maybe using it as a power bar would be better? So instead of break or not, have it break 0-2 blocks, but make sure there are areas that require a fine touch.

Animations go a long way.

NOTHING MINOR ABOUT IT

the red bar is a nice idea but imo not suitable as the sole mechanic. the rest of the game is fine though :)

Well made, i like the idea as well:)

It's fun to play

Not very challenging but fun to play and well made. I like the idea of changing a gameplay rule at each level and that the player have to find out what is different every time.

Can't quite figure out how to really do anything...

Nice and simple. I like how the mechanic changes subtly as you progress deeper.

It would be really nice to have an indicator of the tile that I am trying to dig on top of my character or on top of the tile itself. I didn't notice the arrow in the corner for a long time, and it's not really in a good position to be seen quickly

I also saw a lot of what looked like gems in the background of tiles, but I couldn't find any way to collect it.

Menu music is good, game is pretty fun, nice job!

"I also saw a lot of what looked like gems in the background of tiles, but I couldn't find any way to collect it."
They are just graphics, made to make the game a little more beautiful.

209 seconds!
Control reversal is _ALWAYS_ the opposite of fun, when will people learn! otherwise good effort :)

The concept is awesome, but the gameplay is kind of slow and hitting the red thing is always in the same position so its no that hard. Was fun tho :D Great work :D

I really liked the graphics, simple yet fun

Fun little game. Looks like you tried some different gameplay mechanics, and while some didn't fit, it was good that you tried different things. I could see how you were trying the reflex bar with the time to reach the gold, perhaps it would be more frantic if the timer counted down (like you were running out of air), that way you would only see the lower levels if you were quick enough, and the game would have lose condition. Keep up the good work.