HU games are prevalent as are six-max contests. Sit-n-gos are offered at buyins from $0.25 to $200. Hold'em, PLO, and PLO Hi-Lo are also spread in fixed limit format, but action is scarce.
During peak times, you might find about a dozen tables going simultaneously, However, there are only seldom any games running above the $0.50/$1.00 or $1/$2 level.