I find it hard to imagine why slots would disappear. What could possibly cause this? Perhaps there are bans in some country. But on a global scale, I think this is completely unrealistic. But if we do accept that this did happen, their place will most likely be taken by games that are as similar as possible. Most likely, roulette or similar games. These are games where you don't have to think, but rather click, spin, or spin something, and the outcome is determined relatively quickly.