Jasoco said:It's Mario. It'll be a full game. It was Yoshi. It became a full game. Mario 64 DS was a tech demo too. It was called Mario 64x4.
If it's an IP people love, it will become a game.
Pretty sure that Mario 128 thing with all the Marios running around eventually morphed into Sunshine. (At least the technology behind it)
Also Luigi's Mansion was a demo too.
The Mario 128 thing really became Pikmin I believe.
And eventually some of it was used in Galaxy 2 with those phantom Mario stages.