Delisoba Deluxe is one of the most sought after "not for sale" title on the Sega Saturn and probably the most well known.
It is not the most expensive title (2-3 other titles are more expensive than Delisoba Deluxe) but nevertheless it fetches high price on the market. If you are lucky enough, you can find it complete in mint condition for about 450-500 Euros (55 000 Yens / 700 USD as of today) but you have more chance to find it for more, likely 750 Euros (85 000 Yens / 1 000 USD).
It is also not the rarest title of the Sega Saturn library. Despite its value, you can find it quite easily in Japan. On the "rarest scale", you can count more than 15 titles (games and not for sale titles) that are more difficult to get. As always, expensive does not mean rare.
Delisoba Deluxe (which stands for Deliver Soba), developped by Cave, is a "game" given away at the Tokyo Friend Park II TV-show made by TBS (Tokyo Broadcasting System). In this show, contestants have to complete a certain amount of mini-games, one of them being Delisoba. This is "a two player game in which one player races to checkpoints in a video game to deliver soba in a set amount of time, while the other sits at the back and holds the soba to be delivered. If the player crashes into an obstacle in the game, the players on the seat will also feel the impact and drop the delivery they are holding, simulating what occurs in the video game" (description found on the internet on different websites, original publisher unknown).
Delisoba Deluxe for Sega Saturn is the remake of this mini-game.
Some years later, the Delisoba mini-game has been updated and has been named Delisoba Gold. Here is the official page at http://www.tbs.co.jp/tfp2/atr_soba.html
You can find some videos of the actual TV-show on Youtube. Here are 2 of them showing Delisoba mini-game:
- Delisoba Gold