I think Telegram Casinos is a trending lately since this platform is conquering the crypto market with its useful features and making everything easier for users, Personally, I had a very recent experience with a piker telegram based game, it was announced in the other forum months ago, played with it few times before making a deposit and shared some games with a friend. Unfortunately the experience was awful, the casino servers were lagging and they caused us to lose several times (not knowing from where the issue comes from, the casino servers or Telegram platform), when my account have got banned, I couldn’t find a fast way to communicate with their support team.
However, it worth to mention that the there are two types of casinos based on telegram, the first one are the casinos that have platforms online and a website then decided to create a Telegram casino, while the second type are those who only have a Telegram based casino. I prefer the first type ofc.