i recently ran across a bank of ancient video poker machines with a
game called LO-BALL. i've never seen anything like it. it's video
poker based on california lowball, with a single-joker deck. hand
types and payouts as follows:
100 Joker-432A
20 5432A
15 6432A
10 65-high
5 74-high
4 75-high
3 76-high
2 8-high
1 any Joker
i can't imagine it's a good game, because strategy would be too easy
for it to overhold much from bad play. but i'm curious what optimal
return is. anyone seen this game before, and worked it out? i could
figure it out myself, of course, but i'm feeling lazy. 
cheers,
five