Jackson tried to purchase The Fantasy Trip from Thompson after Metagaming ceased operations in April 1983, but Thompson declined the offered price of $250,000. Jackson designed or co-designed many of the games published by SJ Games, including minigames such as Car Wars (1981) and Illuminati (1983), Undead (1981), and a published version of an informal game played on college campuses, called Killer. Jackson wanted to get into computer gaming software in the early 1980s, but instead wound up licensing gaming rights to Origin Systems, which produced games such as Autoduel (1985) and Ogre (1986). Jackson became interested in designing and publishing a new roleplaying system in the middle of 1981, intending it to be detailed and realistic, logical and well-organized, and adaptable to any setting and any level of play; he announced GURPS in 1983, although the company's magazines delayed development of GURPS until 1984, making the combat system book Man to Man: Fantasy Combat from GURPS (1985) available for Origins 1985, and the full GURPS Basic Set appeared the next year in 1986. In 1995, Sean Punch took over for Jackson as the GURPS line editor. Recent years Jackson also designed the strategy card games Munchkin (2001) and Ninja Burger (2003), and the dice games Zombie Dice (2010) and Cthulhu Dice (2010), as well as Zombie Dice variants Trophy Buck (2011) and Dino Hunt Dice (2013). Jackson has exhibited his elaborate Chaos Machine at several science fiction or wargaming conventions, including the 2006 Worldcon. On May 11, 2012, Steve Jackson's Kickstarter funding project for the 6th Edition of his Ogre game became the highest grossing boardgame project at Kickstarter, with 5,512 backers pledging a total of $923,680. The success of the Ogre Designer's Edition project prompted the launch of a second successful project - running from Nov 29, 2019, through Jan 6, 2020 - to help re-launch the popular Car Wars franchise as well. The two "Steve Jacksons" Jackson is often mistaken for Steve Jackson, a British gamebook and video game writer who co-founded Games Workshop. The confusion is exacerbated by the fact that while the UK Jackson was co-creator of the Fighting Fantasy gamebook series, the US Jackson also wrote three books in this series (Scorpion Swamp, Demons of the Deep, and Robot Commando), and the books did not acknowledge that this was a different 'Steve Jackson'. 1990 Secret Service incident and legal actions On March 1, 1990,