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Game Credits
Name list
Jan Sleeper
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Mario's Early Years: Fun with Letters
(SNES)
USA
Role
Where credited
Credited as
Art by
Game
Jan Sleeper
Mario's Early Years: Fun with Numbers
(SNES)
USA
Role
Where credited
Credited as
Art by
Game
Jan Sleeper
Mario's Early Years: Preschool Fun
(SNES)
USA
Role
Where credited
Credited as
Art by
Game
Jan Sleeper
Mario's Time Machine
(PC)
USA
Role
Where credited
Credited as
Artists
Game
Jan Sleeper
Mario's Time Machine
(SNES)
USA
Role
Where credited
Credited as
Artists
Game
Jan Sleeper