The GOG version is a "GOG.kom" special, optimized for Windows 10 and 11 to ensure a hassle-free experience on modern hardware.
Added a "Run" button, "Dial-a-Combo" attacks, and new fighters, though it famously excluded Scorpion until later updates. GOG Availability and Features Mortal Kombat 1 2 3 Free Download (GOG)
If you are looking to purchase the digital activation key, several options are available: The GOG version is a "GOG