Boxlax = Greatest version of lacrose.
Box lacrosse is played on a defrosted ice rink. It is a much faster paced game. A lot of hitting (cross checking allowed). Nets are much smaller 4"ish by 4"ish. Goalies were a stack load of gear (basically hockey goalie but much bigger). Shots are taken from inclose and goalies can face 50+ shots a game.
There is also a National League.
NLL.com -- Official Website of the National Lacrosse League - Home Many MLL players play in this league in the winter. It is played on the same dimesnsions as a hockey rink. Instead of the floor being concrete, they use turf.
Dadabhoy