Fringeworthy posits that in 2013 — forty years in the future when the game was first published — a Japanese research team in Antarctica discovers a dimensional gateway left behind by an ancient alien race. The ability to use the alien equipment to follow paths — called "fringes" — to alien and alternate Earths is very rare, and the people who have this ability become known as the "Fringeworthy".

One effect of using the equipment is that humanity comes in contact with a genocidal alien race of shapechangers and planet destroyers called the Mellor; these aliens become a constant nemesis.

The first edition of the game uses Tri Tac's original rules system, which is highly detailed. The game system makes it possible to adapt the statistics of firearms not included in the game, as long as a source of those statistics such as an issue of Guns and Ammo or Jane's Defence Weekly can be used as a game supplement.

Character creation, like combat, in the Classic Edition, is complex, with 15 basic attribute scores and between 6 and 19 secondary abilities and skills, many of which may be moderated by an Education Type attribute

In 1975, Richard Tucholka, Kevin Dockery and Robert Sadler formed Timeline Games to create the post-apocalyptic role-playing game The Morrow Project based on a story that Dockery and Tucholka had started to write. Due to conflicts with Dockery, Tucholka and Sadler left Timeline to found Ticky-Tac Games, soon to become Tri-Tac Games. After publishing a microgame titled Geriatric War, Tucholka created Fringeworthy. Like The Morrow Project, the game was based on a series of unpublished science fiction short stories Tucholka had written ten years before,^[1] and it was published in 1984. It was the first role-playing game to incorporate dimensional travel as its central tenet.^[2]

Tri-Tac also released a number of supplements to the game, including Rogue 417, Cloisters, Invasion US, Weirdzone, and Hardwired Hinterland.

In 1984, Tri-Tac produced a second edition with a print run of 4000. A third edition released in 1992 featured a revised and greatly expanded background, and the inclusion of alien races and other humanoids. A small sample adventure was also included.^[3]

In 2009, Tri Tac Games released a d20 Modern edition.

In Space Gamer No. 65, William A. Barton liked the novel premise, commenting, "Fringeworthy I view as the most innovative of the recent new RP systems for its first-of-its-kind alternate worlds theme. I believe it to be deserving of an award of some sort for creativity and innovation."^[4]

In his 1990 book The Complete Guide to Role-Playing Games, game critic Rick Swan thought this game "tackles the concepts of alternate realities and interdimensional travel with originality and style." However Swan found the game mechanics "adequate, but [they don't] match the invention of the premise. Character creation is an uninspired blend of random attributes and skill selection is far too time consuming ... The combat rules produce satisfactory results but require a lot of number juggling." And Swan was hesitant about the experience system, finding that "it tends to push abilities to unrealistically high levels, producing characters who are theoretically capable of walking away from a plane crash." Swan concluded by giving the game a rating of 2.5 out of 4, saying, ""All the systems are playable, though their virtues remain modest. Where Fringeworthy really shines is in its fresh approach to an underexplored topic; no other game covers the ramifications of interdimensional travel as thoroughly as this one."^[5]

In the January 1995 issue of Shadis, Dirk Dejong reviewed the third edition, writing, "This is a relatively untouched genre, done with wit and intelligence." Dejong also liked the new material, commenting, "The 90 pages added to this version were used to good effect, with the addition of aliens and other humans, new equipment, and new information on the Fringes." Dejong concluded, "While Fringeworthy leans to complexity, I feel that it has been well enough designed to handle almost anything that you, or your players, could wish for."^[3]

• Challenge #67 (December 1992)
• White Wolf #35 (March/April, 1993)

• Fringeworthy podcast (now called Gaming on the Frontier)
• Fringeworthy homepage
• Fringeworthy forums
• Fringeworthy on RPG.net
• Fringeworthy fansite