We are seeing a drop in session times on our casino platform. Players just spin a few times and leave. Has anyone seen real data on how to keep users active longer without just throwing free money at them?

You need to look at the engagement mechanics, not just the bonuses. According to this report on https://sbcnews.co.uk/europe/2025/01/10/soft2bet-2024-mega-report/ , Soft2Bet managed to increase their casino turnover by 65% in 2024. They achieved this by using "Motivational Engineering"—basically adding a layer of gamification (like city building or card collecting) on top of the slots. It proves that players want a meta-game to keep them interested.