If it is a Ren'Py game, it should run natively on Windows by executing the .exe file inside the extracted folder.
Be aware that downloading .rar versions of games from unofficial sources can pose security risks and may infringe on the creator's terms of service. Köztünk v2022.09.20i.rar
v2022.09.20i (likely released on or around September 20, 2022). If it is a Ren'Py game, it should
The file refers to a specific build of a Hungarian visual novel or fan-made project titled "Köztünk" (which translates to "Among Us" in English). If it is a Ren'Py game