Philips CD-i were released: "", "" and "Zelda's Adventure". Nintendo and Philips had established an agreement to co-develop a CD-ROM enhancement for the Super Nintendo Entertainment System due to licensing disagreements with Nintendo's previous partner Sony (an agreement that produced a prototype console called the SNES-CD). While Philips and Nintendo never released such a CD-ROM add-on, Philips was still contractually allowed to continue using Nintendo characters. Applications were developed using authoring software produced by OptImage. This included OptImage's Balboa Runtime Libraries and MediaMogul. The second company that produced authoring software was Script Systems; they produced ABCD-I. Philips also released several versions of
The Legend of Zelda was developed and released for the Philips CD-i in the early 1990s as a product of a compromise between Philips and Nintendo, after the companies failed to develop a CD-ROM peripheral for the Super NES. Created independently with no observation by or influence from Nintendo, the games are , together with "Zelda's Adventure". Nintendo never acknowledged them in the "Zelda" timeline, and they are considered to be in a separate, self-contained canon. These games are widely acknowledged to be the worst installments in the series. Three "Zelda"-themed LCD games were created between 1989 and 1992. The "Zelda" version of Nintendo's