Deep Abyss is a simulation and casual game in which players control a submarine to locate and collect radioactive waste dumped in the deep sea. The game involves searching for waste using sonar, torpedoes, and sensory inputs, while navigating through various underwater obstacles. In this game, players explore the depths of the ocean, completing a series of missions that include 50 normal, 50 hard, and additional challenge missions, all aimed at cleaning the sea and promoting environmental awareness. It stands out with its focus on environmental themes, realistic submarine controls, and the ability to upgrade the submarine using rewards earned from completing missions. Some profits are donated to support ocean conservation efforts, adding a meaningful layer to the gameplay.