RTP version hidden?

so here's a weird one. was checking out a new slot - looked fun, decent min bet - went to find the rtp like i usually do, and it's just not listed anywhere. like, not in the info, not in the game rules, nowhere on the site. i thought they were supposed to show that stuff? kind of makes me feel like i'm wandering into a back-alley dice game run by raccoons. i know rtp can shift, but to not even post it at all? seems sketchy, especially when i see people talking about variable versions and such.

i always keep a spreadsheet and write down rtp for every game i touch, just because it helps spot the duds before i start bleeding chips. but now i’m wondering if these guys are hiding bad returns or if this is some new stealth mode for casinos. anyone else notice this trend picking up? last thing i want is to play a game that's secretly tighter than the blackjack table during a power outage.