You've definitely hit on a significant trend in mobile gaming! I've also observed this shift, and it seems to be driven by how people naturally use their phones throughout the day. I was reading an interesting article
https://blog.aaaenos.com/how-roulette-apps-fit-short-mobile-sessions/ that really dives into this topic, explaining how mobile gaming has changed; it doesn't need long, uninterrupted playing sessions anymore. The piece on how roulette apps fit short mobile sessions points out that many people just quickly open a gaming app when they're commuting or waiting. This kind of gaming is all about convenience, with a smooth roulette game download being a key factor to eliminate extra steps and get straight into playing.