Since nobody has described equal offense...it goes something like this....
Each player has 10 innings. An inning consists of at most 20 balls or points. So, you break them like 8 ball (not sure if you take ball in hand or not), and try and run until you miss, or you run all 20 balls. Obviously if you run 14, you play round a break shot and try and run the additional 6. You stop when you miss and then it is your opponents turn. There are no safes, just offense. Each player get 10 turns at the table and can run only up to 20 balls and no more. The best score you could have is then 200 pts.
I've played this way, but instead of breaking them like 8 ball, I actually set up the initial break shot like straight pool.
That's basically how it goes, I'll let someone correct any mistakes.