Jack Bros.

The player takes the role of one of the three Jack brothers – Jack Frost, Jack Lantern, or Jack Skelton – who have visited the human world for Halloween, and need to return to the fairy world before the portal connecting the two worlds closes. The player needs to make their way through six areas, which consist of a number of floors, defeating enemies by using character-specific attacks and collecting keys to be able to advance to the next floor. It received generally positive reception for its gameplay, but was criticized for the lack of puzzle elements and under-utilization of the Virtual Boy's 3D effect.

• Title — Jack Bros. • Developer — Atlus • Publisher — Atlus • Director — Koji Mishima • Producer — Hideyuki Yokoyama • Composer — Hiroyuki Yanada • Series — Megami Tensei • Platforms — Virtual Boy • Genre — Maze • Modes — Single-player

• Illustration — The player searches multi-floor areas for keys while fighting enemies and avoiding traps. Jack Bros. follows the three Jack brothers – Jack Frost, Jack Lantern and Jack Skelton – who have traveled from the fairy world to the human world through a portal that opens every year on Halloween. Losing track of time, they spend too much time in the human world, and forget about returning until there only is one hour left to the portal's closing; the fairy Pixie shows them a shortcut, which, while dangerous, is the only way to return to the portal in time. The player picks one of the three brothers to play as; Pixie can also be unlocked as a playable character. They traverse six areas within a time limit to make it back to the fairy world in time. The areas all consist of a number of floors; the player needs to collect all keys on each floor, before being allowed to jump down to a lower floor. To find the keys, the player uses a radar that displays their locations; once all have been collected, it shows the location of the exit. Once the player reaches the bottom floor, they are faced with a boss character they need to defeat, after which they can proceed to the next area. To defeat enemies, the player can use both regular and special attacks. The latter use up Special Attack Stars; the player starts the game with three, and can gain more throughout the game, which carry over between areas. The types of attacks and stats such as attack power and agility differ depending on the character: Jack Frost's standard attack is throwing snowballs, Jack Lantern's is shooting fire balls, while Jack Skelton uses his knife. Their special attacks are, respectively, freezing all enemies for a few seconds; dealing a large amount of damage to all enemies; and defeating all enemies that are visible on the screen. As the player explores the floors, they need to avoid being attacked by enemies or falling into traps: each time this happens, the remaining time limit decreases by five seconds. If the timer reaches zero, the player reaches a game over state, although they are given the option to restart from the beginning of the current area.

Jack Bros. was developed and published by Atlus for the Virtual Boy, and was released on September 29, 1995 in Japan, and October 1995 in North America. According to Nintendo Power, Atlus did not reveal any details about the game's development, although it is known that it initially was planned to be titled Devil Busters. It is a spin-off from Atlus' Megami Tensei series, and the first entry to be released outside Japan. Being a Virtual Boy title, it made use of the system's stereoscopic 3D to display conventional 2D graphics in monochrome red and black visuals, and a graphics technique called parallax scrolling, to create a 3D effect. On May 14, 2026, Jack Bros. was re-released for the first time via the Nintendo Classics service.