Resident Evil

The Sega Saturn version, released in July 1997, added an unlockable battle mode in which the player must traverse through a series of rooms from the main game and eliminate all enemies within them with the weapons selected by the player.

It features two exclusive enemies not in the main game: a zombie version of Wesker and a gold-colored Tyrant. The player's performance in the battle mode is graded at the end. The game's backgrounds were touched up to include more detail in this version. The Japanese version is the most gore-laden of all the platforms; after decapitating a crawling zombie with a kick, the head remains on the floor, and Plant 42 can cut the character before the game over screen; though the live-action footage is censored in the U.S. version.

The Saturn version also features exclusive enemy monsters, such as a re-skinned breed of Hunters known as Ticks and a second Tyrant prior to the game's final battle in Chris's game. Exclusive outfits for Jill and Chris were added as well.