Palladium

Palladium Books is a company mostly ran and founded by Kevin Siembieda. It has produced around 15 seperate settings all using a single semi-standardized game system. It is about on the same level of complexity as D&D 3.5, but may be harder to learn from the book because of layout (depending on the which book you use, some are wierder then others, opinions fa/tg/uys?).

Settings:

• After the Bomb
• Beyond the Supernatural (CoC esque)
• Chaos Earth (RIFTS as it desends into grimdark)
• Dead Reign (BRAAIIIINSSS)
• Heros Unlimited (Supa Heros)
• Palladium Fantasy RPG (the company's first)
• Nightbane (google high octane nightmare fuel)
• Ninjas and Superspies (... that was easy!)
• RIFTS (MOAR MEGADAMAGE)
• Robotech (yes the anime one)
• Mechanoids
• Recon
• Splicers

As well as several others ("Teenage Mutant Ninja Turtles and other Wierdness!"), and a few non-setting specific series such as the wepon compendiums (made to be at least usefull, if not eaisly adaptable to any system), and the quarterly released Rifter (a hodgepog of material that never made it to the source books along with homebrews Kevin made cannon).