Cowabunga is a level editor for the NES game, Teenage Mutant Ninja Turtles. Cowabunga currently has the following features:

• Editing for most of the levels in the game. (Technodrome boss is only uneditable level)
• Basic Palette Editing
• TSA Editing
• Enemy Editing/Adding/Deletion
• Special Objects Editing (adding and deleting not implemented yet)
• Solidity Settings Editing
• Editing of various level properties, such as pattern tables used, changes in enemy types, and a few other settings.