Kevin Siembieda

Rifts

2002

Palladium Books presents Rifts world

2014

Rifts Adventure Sourcebook

2003

Heroes unlimited

1998

Zentraedi breakout

1994

Villains Unlimited

1992

Truckin Turtles (Teenage Mutant Ninja Turtles Role-Playing Series)

1989

The Rifter [Your Guide to the Megaverse] #27

2004

The Rifter (33)

2005

The Palladium fantasy role-playing game

1996

The Justice Machine

1985

The Collected Mechanoid Invasion Trilogy

1999

Teenage Mutant Ninja Turtles Rpg

1999

Tales of the Chi-Town 'Burbs

2008

Role Playing Game (Macross II)

1993

Robotech

2008

Robotech the Role-Playing Game

1987

Robotech RPG Book Three

1987