The problem why 'The Lost Vikings' on CD-i never happened was the lack of assetts. Interplay was a company with internal problems at that time and it did not give any attention to CD-i

One of the more fabled CD-i titles is The Lost Vikings on CD-i. It was announced, but after that it disappeared from the CD-i release list. In August 1994, CD-i Magazine pressed a very interesting article about three upcoming CD-i games. Philips Media signed an agreement with Interplay to develop three games on CD-i. Battle Chess, The Lost Vikings and a third unnamed project. We're still puzzling on what game that last one could be? Was it Bard' s Tale? Or Another World? Or maybe even Alone in the Dark? Anyway, The Lost Vikings was going to feature all 43 levels but the CD-i version was going to be a bit special: The sequences would be using the Digital Video Cartridge. So The Lost Vikings was not labeled as a "Compact Disc Interactive"-title but it was going to be a "Digital Video on CD-i"-title. I recently discovered that Krisalis was involved in this process. We know Krisalis from their 1997 CD-i release 'Ultra CD-i Soccer', also featuring Digital Video, which may be a result of their experience in coding the DVC in the Lost Vikings project. 

 The problem with The Lost Vikings was the lack of assetts. Interplay was a company with internal problems at that time and it did not give any attention to CD-i. The original game was developed by Silicon & Synapse (nowadays called Blizzard) but they were not involved in the CD-i port. The original code could be described as similar as the Battle Chess port code (also developed by Silicon & Synapse): a mess. Probably because of the many ports it had gone through already by the time that a CD-i port was considered. The CD-i required heavy optimization which in the end took too much time to solve. The game was buggy and support was dropped after the USA part of Philips Interactive Media closed in 1994. It took a lot of beautiful potentional CD-i hits with it. So when CD-i Magazine posted the article, the game was already close to being cancelled...