Dig the vibe of this game thru and thru.  I really like how the sonar works.  The sensitivity of the sub on the walls is probably too high, for the jam especially.  I struggled to piece together 10 gold, bought a mine, then exploded on a wall before I could use it.  Maybe just give the player back full health when they die?  It felt like a struggle to get started, but once it gets going, top tier.  Love the music too.

Wow! I automatically loved it by the gifs and the idea but I must admit it was a bit different to my expectations. Since I start with the buy menu I thought there was a quick loop there between deploying the mine, die, improve, repeat. Also I thought that the mine was going to destroy the terrain somehow, and to do that in order to find hidden treasures not to find them floating around. But I loved the idea and the music of the game, it was a great entry, I just expected a bit more, it has great potential.

This game is too good.

This game is adorable and harrowing and I am soooo bad at not bumping into walls ;0; I keep thinking I’m safe and then drift a pixel to far and BOOM

That said, I loved the procedural maps, and the sound effects and visuals are both incredibly well polished! You did a great job with the sonar functionality, too!

This game really hooked me.

Whenever I blew up, I’d immediately want to save up for an upgrade to make the gameplay more comfortable. I set a goal to save for headlights, putting oxygen and sonar out of my mind for a while. Once I bought the headlights, things got easier, but then I realized I needed to save for sonar and oxygen upgrades. However, after buying them, I felt the sense of progression was weak; I still couldn't dive very deep, remaining limited to the one or two diamonds available at the start.

The graphics are pleasing and well-crafted. The soundtrack changes depending on the stage, which is a nice touch. The gameplay concepts and design choices look interesting.

I really liked this one! One of my favorites of the jam! So know that the rest of this criticism is really minor compared to how fun I found this.

The risk vs reward balance here is off. The start is too slow (as is, frankly, a lot of the progression). The game has a really strong and successful element of pushing your luck. But it would feel a lot better if your skills were more rewarded. After I pick up my first gold, I can either play it safe and take it back to the ship, or push my luck and try and get one more (which is all you really have the O2 for at the beginning). But because of the procedural cave, it's random whether the next part of the cave has any gold close enough to me. The risk is that my run is lost, but the reward is only maybe there's a gold around the corner.

The first and simplest fix for this would simply be making the gold a little higher value. It's often just not worth going for one more gold when if I take damage, I've basically negated it. The second fix, would be to actually not always regenerate the cave. Have it so that when the player returns to the ship they can either stay or move to the next cave. That way another skill is being rewarded: exploration and memorization. As it stands, the only skill that is rewarded is speed through the cave, but that is in friction with the ever changing layout.

I really liked this game!

I had a *lot* of trouble getting anywhere in this game, between the short oxygen timer, the inaccurate sonar, and the small number of hits you can take.  And all the upgrades seemed so far away considering how limited your oxygen supply is at first, so finding even *one* gold nugget was difficult (let alone getting back before your oxygen ran out and/or you smacked into too many walls trying to hurry).  And since you had to pay to repair damage, that made it even harder to get the other upgrades (which required ten, fifteen, or even twenty nuggets).

I like the concept, it's just very difficult to actually play without blowing up repeatedly. :D

This was really well executed! Gameplay, graphics, and soundtrack all came together into a gameboy game that was fun to play! Really well done! Good work!

This is a really cool idea, implemented extremely well. Very fun and interesting and just straight up cool! Good job

This is a really cool game!! I enjoyed playing it; it was fun and interesting. The graphics are of high quality, and the color scheme is pleasant. The mechanics of diving into the sea and using a locator to navigate in the pitch‑black sea darkness are quite unusual! I commend you for this idea — it was a real pleasure to play.

 Nevertheless, for creative development, you need to be able to work within certain constraints and find cool solutions, even if something limits you. In this case, I can’t say that the theme is interpreted in any particularly special way.

The oxygen amount seemed real harsh at the start, but otherwise I love the idea. Feels like a nautical themed Motherload game.

Nicely done.

Art is really pretty, and the mechanics are a good foundation.

The sonar mechanic is fun. The art and audio work together really well too, especially the palette changes helped sell the sonar too.

Very impressive for a first jam!

This is so much fun! I wish the difficulty was tuned to be a little easier though. For example, on oxygen depleted, if instead of instant failure it started a brief high-pressure countdown so you can "hold your breath" and return to the surface. The core gameplay loop totally works though, and gives me the urge to explore and collect. I see from your comments you had balancing in mind but didn't get to it, and that's really my only critique. I'm going to play a little more and see how it feels after upgrades.

Visually, I loved the bubble animations and the rolling waves on the surface. The dithered wipe transitions are unique. High level of UI polish, super nice to have a save system too, which I see persists between page refreshes. Really impressive that you got all this done in a couple weekends!

Really love the art and sound, and the concept is really neat! I did find it a bit tough in the beginning, but otherwise I feel like this is an interesting start to a full game! I also love that you took the time to add a save state with multiple save slots, that's not usually something I've come across. Well done!