I just realised why people thought Space Jack was a decent game. They used to allow you to play just one hand at a time so it was just the same as blackjack with a the 3 to 1
BJ payout.
I am pretty sure someone from Slotland posted here that the game was fairly dealt if playing this way (you can only go for the jackpot by playing all three hands simultaneously). Players had bad results though and it seemed clear it was rigged.
Slotland later changed the game so it wasn't possible to just play one of the hands (which would have theoretically given you an advantage if it was fair)and you now must bet on all three hands.