You are looking at a complete set of unlicensed PAL games for Playstation 1. Well, actually only two of the titles could be defined as real games, since three of them are screensavers and one is a visually enhanced CD player with a mini game.
The text “FOR PLAYSTATION 2 & PSONE” is printed on the front covers, but since the games works on a Playstation 1 console, they are technically Playstation 1 titles. Playstation 2 is backward compatible, so it will play all Playstation 1 games, but Playstation 1 can never play a Playstation 2 game.
“Fun+Learn1ing – Volume 1” (educational game)
“Fun+Learn1ing – Volume 2” (educational game)
“Feeding Frenzy” (screensaver with predator theme)
“Virtual Aquarium” (screensaver with aquarium, space and lava lamp theme)
“Virtual Fireplace” (screensaver with fireplace, space and disco theme)
“DSP – Music Revelation” (except for the disc with the visually enhanced CD player, a music CD is included with soundtracks from various video games)
These titles are very hard to find.