Hydro Thunder (ハイドロサンダー) is a water-based racing game developed by Midway Games and released for the Nintendo 64 in 1999. The game is set in a futuristic world, where players compete in a variety of powerboat races. Players can choose from a selection of different boats, each with its own unique stats and abilities. The game features a variety of different tracks, ranging from rivers and lakes to canals and waterfalls. The game also features a variety of power-ups, such as turbo boosts, shields, and weapons. The game also features a two-player split-screen mode, allowing players to race against each other. Hydro Thunder is a fast-paced and exciting game, and is sure to provide hours of fun for racing fans.