It was a very good game, but after you lower the multiplier the house edge is way too high now.
CMIIW, the chance of winning the game (Find 6 BTC before finding 9 x) is 60%. So, the house edge was 4% at 1.6x but is now 22% at 1.3x.
Honestly 1.6x was too easy, absolutebit would go broke if it had stayed like that.