The Simple Way (For OptiFine 1.6.2_C4 and newer) Double-click the downloaded JAR file to start the OptiFine installer. Click "Install". OptiFine should get installed in the official Minecraft launcher with its own profile, "OptiFine". Start the official launcher and play!Is Minecraft for free?
Minecraft is not and was never a free-to-play game. If you are playing a free version either you are playing a Lite, Demo, or modded version of Minecraft that does not require Mojang authentication.