Buzz & Waldog Nintendo

The game stars two characters, Koko and Suzi, who share the same abilities. You can either play as one of the characters in single player or both in multiplayer (the multiplayer mode is designed in a way similar to Super Mario Bros, i.e. the players need to complete each stage in turns). The A button is used to jump and the B button allows you to do a spin kick jump which can hit anything around you. In each level, you have to collect a required amount of keys under the time limit in order to beat it. Each stage is divided into 3 levels with a boss fight in the end. There are 5 stages in total and after completing them you need to beat all the bosses again before confronting the final boss. There are also question mark boxes around that you can break to get points, gems, a time increase, 1-ups or a power-up. The power-up can either grant you the ability to double jump and if you already have that, the ability to let you glide in the air. Koko Adventure was later changed and was supposed to be released by Innovation Technology in 1993 but due to unknown reasons, it never was along with some of Open Corp.'s other games. In this version, Suzi is replaced with a male character known as Waldog and the title screen was changed. (although her name remains on the game over screen through cheating/hacking). That version also features infinite lives, which was likely intended for debugging and testing.