Palladium Books

The first game released by Palladium Books was The Mechanoid Invasion in 1981, followed by the first-editions of the Palladium Fantasy Role-Playing Game in 1983 and Heroes Unlimited in 1984, with The Valley of the Pharaohs released between the two.

Other popular titles include adaptations of Teenage Mutant Ninja Turtles (1985) and Robotech (1986). Palladium was also one of the major distributors of Robotech merchandise for several years. Between the late 1990s and early 2000s, all of Palladium's licenses lapsed and were not pursued for renewal. In September 2007, Palladium finalized negotiations with Harmony Gold USA to produce Robotech: The Shadow Chronicles Role-Playing Game, an RPG based on Robotech: The Shadow Chronicles. This license was discontinued in 2018.

Palladium claims that it was the first publisher in the RPG industry to adopt the practice of perfect binding its books, a move that has since been emulated by many other companies. Palladium also releases most of its titles in paperback, whereas other major RPG publishers mostly publish hardback editions. This format choice has allowed Palladium to provide full sourcebooks at a lower cost than many other game lines.

Although Palladium did not establish the use of universal game mechanics, it was one of the first companies to successfully create role-playing games in multiple genres; for this reason, its house system may be described as "Megaversal" – "not universal, but more than just one world".

Licensing

Palladium has licensed several of their intellectual properties to third-party developers.

The first book ever published by another company under license from Palladium was Rifts: Manhunter from Myrmidon Press, released December 1994. Palladium cancelled the license in May 1996.

In October 2000, Rifts was licensed to the now defunct Precedence Entertainment for a collectible card game. In May 2004, Rifts was licensed to create the Rifts: Promise of Power video game for the failed Nokia N-Gage gaming platform.

In May 2003, Palladium announced that Jerry Bruckheimer Films and Walt Disney Pictures had optioned the rights to make a film based on Rifts. At the time, Bruckheimer was said to be developing the movie in conjunction with screenwriter David Franzoni. An April 19, 2006, press release asserted that "until Jerry Bruckheimer has a script he loves, the movie can't get the green light." In the April 14, 2011, weekly update, Siembieda said that the film option would be renewed for a ninth year.

The Rifter is a magazine published for all lines.

After the Bomb, a post-apocalyptic RPG that began as an alternative campaign setting for Teenage Mutant Ninja Turtles & Other Strangeness, but soon developed into its own series. In it, mutant animals struggle for survival, often against human supremacist nations.

Beyond the Supernatural, a modern horror RPG along the lines of Call of Cthulhu. An incomplete second edition core rulebook was released in January 2005, with more information about the world, which is assumed to be similar to the real world, but with supernatural happenings which no one notices.

Rifts Chaos Earth, a prequel to Rifts, set immediately after a war that triggers a magical apocalypse, opening dimensional gates that unleash monsters upon a technologically advanced future Earth.

Criticisms

Palladium is entirely controlled and owned by Siembieda. Some writers who have been published by Palladium have stated that Siembieda's method of management was too centralized and not adapted to the size the company had reached (no delegation of responsibilities, lack of open dialogue with employees, bad interpersonal relationships), which they cited as a reason they were no longer working for the company. One of the writers later apologized for the manner in which he made his statements, but did not retract his claims.

Robotech RPG Tactics

Palladium and Siembieda received criticism regarding the handling of the Robotech RPG Tactics Kickstarter campaign, ultimately losing the Robotech license it had held for 30 years. The campaign, which raised $1,442,312 with 5,342 backers on May 20, 2013, was described as a "complete disaster" by Polygon, and as "downright catastrophic" by Critical Hit.

In 2014, with rewards still delayed, Palladium issued a plea to backers seeking permission to sell any available copies of Robotech RPG Tactics to attendees of Gen Con 2014, despite an earlier promise to make copies unavailable to the public until backer rewards were fully delivered. Sets received at Gen Con had manufacturing flaws, missing items, items that were supposed to be painted but weren't, and poorly written instructions.

By the end of 2014 and early 2015, Palladium began fulfilling the lower-tier rewards. It promised to send the remaining, mostly higher-tier items in a second wave. Backers raised a case with the Better Business Bureau in 2015, with fewer than 200 of the 5,000 backers reporting that they had received their items by 2016.

In 2018, Palladium announced that it would not be able to issue any of the remaining "wave 2" rewards to backers, as the licence was due to expire, retail sales had slowed, and the company did not have the funds to complete production. Some backers were offered the option to exchange their rewards for other stock, although supplies were limited. Printed materials missing from initial backer rewards and updated assembly instructions were later released as low-resolution watermarked PDFs on the website DriveThruRPG for backers to print their own copies, free of charge.

Loss of the Robotech license

On February 27, 2018, Palladium Books announced they had lost the Robotech IP as it was not renewed by Harmony Gold USA, the current IP owner. Palladium had announced that the remaining items from the Robotech RPG Tactics Kickstarter campaign had been canceled. Palladium had until March 31, 2018, to liquidate its remaining stock.