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Ninja Gaiden Shadow is a prequel to Ninja Gaiden. It is 1985, 3 years before the events of the NES game, and Jaquio has not yet been awakened. However, Emperor Garuda, an evil dictator, threatens New York city and it is up to the Ryu Hayabusa to fight him.

This game is an action side-scroller. Ryu can run, jump and beat his enemies using a sword. He also has a grappling-hook device, which can be used to reach higher platforms, which can then be hand-climbed across. By collecting power ups Ryu can use a magical technique called "the art of the fire wheel", an ascending and spinning wheel of fire which will take more damage than his usual sword. He has up to 5 charges of this technique. Ryu has a life meter with six units, which can be replenished by finding proper power ups inside containers.

The game is divided in 5 stages. Each stages has sub-screens, and the main objective is to go from left to right till the end of the screen, destroying the enemies in the way. Among the enemies Ryu will find humans, cyborgs and machines. At the end of each stage a boss fight awaits Ryu.

Garfield: The Lost Levels is a special version of Garfield: Caught in the Act that was made available exclusively through the Sega Channel. First broadcast in February 1996, the game contains scrapped stages and content cut from the retail Mega Drive release due to time constraints and development issues.

The final version of Caught in the Act originally shipped with five stages, but several additional stages had been planned during the original game's development at Sega Interactive Development Division. Among the cut content were the stages Bonehead the Barbarian (a Viking-themed snow level), Alien Landscape (a space level with prerendered graphics), and a special version of Catsablanca with a cut train section. Bonehead the Barbarian appeared in the game's Sega Game Gear port by Novotrade International, while Alien Landscape was included in the 1997 PC version by Point of View.

Starting the game immediately places Garfield in an abridged version of the hub level that transports him to each of the levels featured in this version. Each level begins with a screen with developer commentary about the level. After all three levels are completed, entering the final doorway in the hub level will display a final piece of commentary before playing the credits. The core gameplay is otherwise the same as in Caught in the Act.

Due to the Sega Channel's technical limitations - the Mega Drive did not retain ROM data after the console was powered off - no dumps of The Lost Levels were known to exist for nearly three decades after its release. However, in September 2024, Frank Cifaldi of the Video Game History Foundation announced the organization had acquired the game. The build was made playable at Portland Retro Gaming Expo from September 27-29, 2024, with gameplay footage soon emerging online. The ROM was finally released to the public on December 15, 2025, as part of the Video Game History Foundation's Sega Channel archive release.