Games like ABYSS - Deep Sea Expedition Log

Fish Farm 3 is a 3D aquarium simulation game where players can buy, breed, and cross-breed a variety of freshwater and saltwater fish, including seahorses, whales, dolphins, sharks, starfish, and jellyfish. As players reach higher levels, they gain access to more fish, decorations, and aquarium inventory, and can earn coins through breeding and selling fish or by playing the "Catch Fish" mini-game. The game also allows players to customize their aquariums with 3D decorations, automate chores, and even recolor their fish.

"Kittens Game is a strategy village simulation text game, where you manage a village of kittens, acquire resources, and unlock technologies through exceptional game mechanics. The game features over 30 buildings, 50+ resources, and hundreds of technologies and upgrades, with no ads or micro-transactions. It takes about 20 hours to beat the game, making it a satisfying and engaging experience for players who enjoy grinding."

Dredge is a fishing horror exploration game where you captain a trawler to discover the secrets of remote islands and their depths. Sell your catch to unlock upgrades, complete quests to uncover each area's past, and avoid the horrors that lurk in the darkness. The Pale Reach DLC adds an additional frozen biome with new challenges and story to explore.

"Project Abyss is a 2D survival RPG set in the deepest ocean, where you explore a living underwater world filled with dangerous sea life, wreckages, and enemy subs. Use a variety of equipment for combat and destruction while surviving against bosses, turrets, and poisonous plants. Experience a day/night cycle in this beautiful pixel art game with an original soundtrack."

Tiny Aquarium: Social Fishkeeping is a relaxing real-time idle game where you create and customize your dream aquarium filled with vibrant fish. Hatch new breeds, play a fishing minigame to discover rare species, and visit friends' tanks to trade fish and join live events. The game features a calming Tiny Mode, letting your aquarium be a soothing desktop companion.

"Sandboxels is an in-browser simulation game with a variety of mechanics, including heat simulation, electricity, and chemical reactions. The game features over 300 unique elements to experiment with, using controls such as left click to place pixels, right click to erase, and shift plus heat or cool to intensify temperatures. Join the community through the game's website and Discord for updates and support."

Away - is a short game telling about the hero's death experience, performed in a gloomy black and white style.

Sunless Sea is a literary role-playing game set in the Victorian-Gothic world of Fallen London. As the captain of a steamship, you explore a vast underground ocean filled with mystery and danger. Your choices shape your story as you face hunger, madness, and the constant threat of shipwreck.

Discover, breed and sell rare and exotic fish in this beautiful, realistic game!

Barotrauma is a 2D co-op submarine simulator set in a harsh underwater environment on Jupiter's moon, Europa. Players must work together to explore and survive, with the option to sabotage and let the ship go down in fire and flood. The game features teamwork, physics-based mechanics, alien sea monsters, and multiple factions to interact with.