Alternative versions Are alternative chess rules/styles considered favourably by the main chess community? To be more specific I mean games like 3D chess (as seen in Star Trek) or landscape chess, as explained here:
http://intrepidis.blogspot.co.uk/2012/08/landscape-chess.html

Are there tournaments for chess variants?
The only variants I can think of that experienced chess players seem to have any interest in are Chess960 (aka Fischerandom) and Bughouse. Even Seirawan chess, which has the imprimatur of a grandmaster, has not really attracted any real interest.

Other variants are not looked on unfavorably but they are basically ignored.