If they do exist - then they will not have a problem until they do well enough to be targeted. This is the 'line patent' that prevents any other product from existing. It's also not dependent on just overlapping or scrolling - it can have anything to do with mating/matching/intersecting/etc. The simple fact of having 'scrolling shapes that overlap or interact with a stationary shape' is the basis behind all music game products and what becomes victim of patent infringement. It's not about the cabinet design or the fact that it's a dance game - or even a game that uses your hands and a custom controller. The biggest reason is because of this patent right here: Kyle Ward wrote: BTW: The biggest question I receive from people (privately) is why can't several dance game products or music game products exist? Why have they died off over the years etc. However, here's an interesting post of Kyle Ward who was part of the ITG dev team at Roxor Games about the patent that prevents new dance games to appear:
Konami decided to instantly kill the game. They settled the case out of court resulting in Konami acquiring ' In The Groove' intellectual property.
As you all know, Konami sued Roxor Games for selling ' In The Groove' kits to convert DanceDanceRevolution machines.