The most reliable and legal way to play is through , where the game was officially re-released in 2022 to mark the franchise's 30th anniversary. Guide to Playing Mortal Kombat Trilogy
Mortal Kombat Trilogy is currently not available for free through any official or legal channels. While it is often hosted on "abandonware" or archive websites, downloading it from these sources is technically considered piracy because the copyright is still active and owned by Warner Bros.. Mortal Kombat Trylogia do pobrania za darmo
If you want to play the game on a modern PC, here is the best approach: Mortal Kombat Trilogy - GOG.com The most reliable and legal way to play