Ecolis (Japan) (エコリス) is a real-time strategy game developed and published by Nintendo for the Nintendo DS in 2006. The game is set in a world overrun by pollution and environmental destruction, and the player takes on the role of a young environmentalist tasked with saving the planet. The game is played in real-time and the player must use a variety of strategies and tactics to protect the environment from various enemies. The player can recruit allies, build eco-friendly buildings, and use special powers to defend the environment. The game features a wide range of characters and environments to explore, as well as a variety of minigames and puzzles. The game also features a multiplayer mode, allowing players to compete against each other in a race to save the planet. Ecolis (Japan) is an enjoyable and challenging game that encourages players to think about the environment and their own actions.