Combat Samurai Island is one of the most detailed combatsims I know. Meaning, most combat sims are low primmed, non scripted and such, all needed to provide an excellent fast place for katana fighting.
However, on Samurai Island (as we call it) its not only about fighting, but also about enjoying wonderful buildings and surroundings.

I admit, I do not really like to spar there, but….its great for nice pictures and meeting people (with swords!).