I’ve wondered the same thing, since many platforms now require full KYC even before you can explore their games. From what I’ve seen, most regulated sites don’t let you play without verification, but some offer demo or trial modes where you can at least get a feel for the gameplay before sharing your documents. I recently came across
https://astronautonline.net/app/ — you can’t actually play there, but it’s useful because you can read a full review of the Astronaut app, see how it works on Android and iOS, and understand what to expect in terms of features like its 98% RTP, dual bets, and the rocket theme that made it so popular. It helped me compare a few casino apps before deciding where to go through the full KYC process.