Most likely it was a scam casino using the name of Binance. If you don't find anything about it, then be sure that they already looted people and ran away. Scams like this where they use names/brands of reputed companies existed for very long. Unfortunately there are some gullible people that fall for those scams. An exchange running a casino would be a huge red flag for the feds/government.
As I said in my post, Binance really had a crypto casino, it was called Bplay.org. You can check web archive -
https://web.archive.org/web/20201101053403/https://www.bplay.org/Like I said, I got introduced to Bplay.org when I was browsing Binance.com. The link of Bplay.org was in Binance wallet and doesn't matter if running a casino is a huge red flag, the fact is that Binance was running it. Today they don't run it.
This was Bplay's official twitter URL - twitter.com/BPLAY_OFFICIAL
This was Bplay's Telegram - t.me/bplayorg
Now all of their URLs are closed except Twitter, which is today managed by someone different.