Philips CD-i
The Philips CD-i is an entertainment system made by electronics/health care company Philips in the early 90s.
The CD-i was not originally designed as a console or even to play games but rather as a general multimedia package that can run educational software, play music and video CDs (with a Digital Media Card, also required for a few games that used FMV). The system was a marketing failure, and today is infamously known as being a console that featured laughably terrible licensed games featuring Nintendo properties.
Suggested Emulators
Emulation on the CD-i is still in early progress. While games such as Hotel Mario and the two Zelda side-scrolling games work, much of its library, however, do not. Especially the Digital Media Card games.
MAME
MAME runs the CD-i and some games work. However, it has problems in terms of progress so don't expect much more progress for a while.
CD-i Emulator
CD-i Emulator is an in-progress emulator that can play CD-i games.