Context: During the SNES's life, Nintendo contracted with two different companies to develop a CD-ROM-based peripheral for the console to compete with Sega's CD-ROM based addon, Mega-CD. Ultimately, deals with both Sony and Philips fell through, (although a prototype console was produced by Sony) with Philips gaining the right to release a series of titles based on Nintendo franchises for its CD-i multimedia player and Sony going on to develop its own console based on its initial dealings with Nintendo (the PlayStation).

Question: Which companies did Nintendo try to get to make a CD add-on for the SNES?
Answer: Sony and Philips

Question: What was Philips' multimedia system?
Answer: CD-i

Question: What competing console did Sony release after working with Nintendo?
Answer: PlayStation

Question: What was Sega's CD add-on?
Answer: Mega-CD

Question: What did Sony do to develop a CD ROM  to compete with Philips?
Answer: Unanswerable

Question: What was the name of Sony's CD ROM?
Answer: Unanswerable

Question: What happened to the deals made with Sega?
Answer: Unanswerable

Question: What did Sega develop after its first dealings with Philips?
Answer: Unanswerable

Question: What was Sega's multimedia player?
Answer: Unanswerable