Koko Adventure is a South Korean unlicensed game. An American release titled Buzz and Waldog was planned but canceled for unknown reasons. It has a lot of assets stolen from other games which isn't too common for pirates.

The game itself is... underwhelming. For each level, you have to collect a certain amount of keys under a restrictive time limit. In defense, the game has solid graphics, music, and gameplay considering that it's a pirate.

This patch restores the second player from the original Korean version, Suzy instead of Waldog and this is reflected in the title as well. Unfortunately it was not able to restore the original color of your outfit either (red).

Update 1.1: 'Waldog’ name changed to 'Suzi' on the scoring screen at the end of the stage, thanks to Zynk.

Update 1.2: Added the patch with Suzi's original colors from the Korean version (with a small edit to the eyes to appear more 'natural').

Tile Layer Pro and Mesen's PPU viewer were used.

Database match: Buzz & Waldog (USA) (Proto) (Unl)
Database: No-Intro: Nintendo Entertainment System (v. 20180803-121122)
File SHA-1: 0F923DE8D7726AD3A78C25CD866E6466EF9F6458
File CRC32: 1587BC5F
ROM SHA-1: D4702A831A398107D8F87BC93BD56C4D8CA78F2A
ROM CRC32: CCC03440