Wie ktoś może, gdzie można znaleźć spolszczenie do tej gry? Kupiłam dla taty, a on nic nie rozumie po angielsku...

If RCT1/2: Consider installing OpenRCT2 for your father. It has Polish as a language option.
https://openrct2.io/
If RCT3: Maybe this will help? But I cannot verify its authenticity, so use at your own risk.
https://steamcommunity.com/sharedfiles/filedetails/?id=471267516