BLANKS, NO BLANKS
Playing with blank tiles or not.
STANDARD, EXTRA
Extra random tiles included in bag for variety or not.
NORMAL, RARES
Increased number of rare high value tiles or the normal amount.
OWNER, GLOBAL
Owner dictionary enabled or relying only on global dictionary for challenges.
CHALLENGE, UNCONTESTED
Allowing players to issue dictionary challenges or let all plays go uncontested.