The original set of Hugo games for children first appeared for the purpose of interactive television in 1990. Soon after, it was converted for the Commodore Amiga and personal computer platforms as Hugo and Hugo 2. Since then, there have been various console ports and versions.
The first Hugo computer game was Skærmtrolden Hugo, released in 1991 for the Amiga and Commodore 64. The game featured only one scenario, the "Labyrinth" (also known as "Goldmine"). It was created by SilverRock Productions (later ITE Media) as their first game since Super OsWALD in 1989.
The first "real" games were the 1992 Amiga games Hugo - På Nye Eventyr (the "Train and Mountain" levels and its sequel, Hugo - På Nye Eventyr Del 2 (the "Forest and Plane" levels). These two were later rereleased as a compilation, titled simply Hugo, in 1994 and then ported to the PC in 1995 (some sources give the dates of 1995 and 1996).
The other PC releases included Hugo 2 (1996), Hugo 3, Hugo 4, Hugo 5 (1997), and Hugo 6; gradually providing new minigames based on the expanding television show. These were later visually upgraded in the compilations Hugo Gold (1998), Hugo Platin (1999), and Hugo XL (1999); as well as the first four titles in the Hugo Classic Collection compilation series in 2000
The Game Boy versions of Hugo and Hugo 2, both released by Laguna in 1995–1996 (or 1994–1997), are actually very different than the computer games, despite sharing the same title. In the first of these, Hugolina gets kidnapped by the Horned King, ruler of the castle Arbarus, after agreeing to his invitation; and Hugo has to free her and defeat the King. In the second, the goal is not to rescue the troll's family, but rather to help Hugo himself escape, as Scylla keeps him prisoner in her own magic castle. Due to limitations of the system, both games are simple side-scrolling platform games. In 1998, Hugo 2 was ported by Infogames for Game Boy Color as Hugo 2½, more faithful to the source material, although still featuring simplified graphics and gameplay.
The two Sony PlayStation games of 1998–2000 (again titled simply Hugo and Hugo 2) were based directly on the computer games, but featured improved graphics and sounds (including music tracks for each stage), as well as a rendered intro sequence in Hugo 2.
Source: Wikipedia, "http://en.wikipedia.org/wiki/Hugo_%28franchise%29," available under the CC-BY-SA License.