I’ve read and reread the BCA rules for Rotation (aka 61) dozens of times, and while the general rules are easy to understand, the rules and penalties for tracking number of fouls is not.
To me, the rules encourage causing your opponent to commit three consecutive fouls for loss of game. Maybe that’s why the Filipinos have their version that favors running balls rather than inducing fouls.
15 Ball is a real game. It’s similar in that the first player to 61 points wins, but the balls can be pocketed in any order. Should be pretty easy for most people on this forum.