I was playing one of these 9 lines today. Had $1000 in it, whittled it down to $600. Got tired and out of boredom, tried an old Hot Red Ruby that I really hadn’t played for several years. Well, it went red, ruby bonus gave me $1500 and after I cashed out, I had $2500. Put it back in 9 line(I think it was Polar High Roller), got it to $3k. It went red, and jackpotted for $6500. All done for the day was close $10K when finished. Doesn’t happen much, but I love comebacks like that.