Kega Fusion is an arcade game developed by Steve Snake, originally called Kegi I and shortened to Kegi II. It was one of the first arcade games based on the Metal Gear Solid series. The game is a side-scrolling action game in the style of olden PC games. The player controls Dr. Serin ahead of a group of Liquid Snake en route to rescue their kidnapped friend, Liquid Ogon. Here, Snake has to fight his way through several stages, rescue Liquid and save the president before they are all defeated by an elite task force composed of members from both the government and private security forces.
Although this game is not emulated properly, it still has a good support from the community. A number of retro gamers have found the level design to be very fun and accurate, even if the frame rate is slow and there are a few problems with the compatibility of the different systems. However, many users claim that the game's true potential has been limited by its compatibility with the other systems, specifically the Sega master system, which is the most popular of the three systems.
Despite lacking the proper support from other emulators, Kega Fusion is still a highly enjoyable game to play. Though not quite as accurate or colorful as the rest of the Mega Man series, the visuals are fairly well done. The music is composed of many themes from around the series including "evil robots" and "war". The game still provides a challenge with each stage, as there are powerful bosses to fight and treasures to find. With some master system compatibility, this game can be played on the Sega Megadroid as well.