Welcome to a creepy pond that is the home to frogs and mutant jellyfish. You play as a frog that must dive further and further into the unknown. The game locks you into a single screen, although you can leave the screen and an arrow will mark where you are. Why is this important? Because you are being chased and followed by jellyfish. Your only defense is the ability to dart through the water. The one button controls ensure this could have been played on an Atari joystick. Your only allies are air bubbles that you need for oxygen (health). It feels like an old school arcade game with updated atmospheric color penciled graphics.
There are a few types of jellyfish, those that have heads (making me think they were yaks swimming underwater) you will need to outlast, until they run out of oxygen. For every bubble that they catch, these jellyfish will dash at you, but you can dart out of the way. More typical jellyfish (headless) will burst if they hit enough air bubbles. You need to bait them to the air, but the longer they haven't bumped into anything, the faster they go. If they catch you, you'll be stuck inside them until a bubble hits them. So what's the danger then? When the headless jellyfish burst, their tentacles spring out damaging you and other frogs. You will also find green jellyfish that rapid fire what look like radioactive air bubbles at you. It almost turns into a bullet hell shooter for brief moments.
On your way down, you'll see frogs in trouble, in a panicked state looking for air. You'll need to bait them over to you for air or bump into them, sending them into air bubbles. Once they have enough air / health, they'll swim away out of danger.
In their panicked state, they can be caught by the 'headed' jellyfish and brought down into the abyss, where the jellyfish gets a supercharged, more aggressive dash. If you take too much damage from headed jellyfish, your green frog will start to turn brown and bleed. This is where oxygen comes into play. It is your health. If you haven't had oxygen, you will turn brown before you too end up in a panicked state.
If you are in a panicked state and get dragged down to the abyss, that's a game over and to the last checkpoint, which quickly loads.
You will quickly reach the bottom of the morbid pond within 20 minutes, uncovering the horrifying truth of what lies below. What has been causing the air bubbles. ... unless the game glitches and prevents the screen before the boss from panning down to the boss. After beating the game the first time and quickly replaying it, I ran into the glitch three times in a row. Luckily you can just recall the last wave (checkpoint).
In all of its glory, its a good game, but its just less than 30 minutes with old school gameplay that can be done on an Atari controller. Is it worth a playthrough, yes, but only if you like old school Atari gameplay and a creepy unconventional tone.