Ecco: The Tides of Time is a 1994 action-adventure game for the Sega Genesis, and the sequel to Ecco the Dolphin. Developed by Novotrade International, it follows the titular dolphin Ecco as he travels through time and underwater environments to battle the Vortex Queen and save the ocean. The game is known for its unique gameplay, which combines puzzle-solving elements with exploration and sonar communication. The Tides of Time features side-scrolling stages with a strong emphasis on environmental navigation and dolphin acrobatics, set to atmospheric music that enhances its serene yet challenging underwater world.