Alternatively, maybe it’s just an exercise in creating a fake feature/product name? If you’d like, I can based on that string as if it were a name:
The Thmyl Lbt module (short for "تحميل لبت" , mythical story downloader) is a narrative-generation system for PC games. It dynamically assembles branching story paths from a locked “legend library” (أسطورية محكره). thmyl lbt tnanyn astwryt mhkrt llkmbywtr
It looks like the phrase you provided—“thmyl lbt tnanyn astwryt mhkrt llkmbywtr”—appears to be in Arabic but written in Latin letters (a form of Arabizi or rough transliteration). Alternatively, maybe it’s just an exercise in creating
"Thmyl Lbt" – Legendary Story Engine for PC thmyl lbt tnanyn astwryt mhkrt llkmbywtr