The art and music style was cohesive and appealing, awesome game presentation. The controls were incredibly intuitive and felt great.
A nitpick about the map is that I didn’t realize I could swim through the floor until a coin appeared there.
Swimming through the map and having clams appear on your sprite tended to feel bad. It felt like I was swimming towards a coin and an event happened that I couldn’t know about meant I loss agency as a player.
The RNG on the clams boon vs. bust probability felt off. On two play throughs, more than half my clams were negative both runs. I notice the high scores were far beyond what I was able to get, which is only possible if the clams are usually beneficial. My guess is that the RNG differs depending on what system the player plays on (Windows, Linux, Mobile, etc). Something to look at.
Last piece, assuming I just had atypical bad luck with clams, comparing my score of ~50 max to the other high scores, that means the coins are pretty inconsequential compared to getting good luck on the clams. If your score is completely determined by luck, then it removes player agency, which isn’t fun.
The game has a great look and feel, definitely it’s strong point. Great work!