Install a Minecraft modding application programming interface, or API, first, then download mods to a computer and copy the mods folders into the Minecraft application folder. The various mods, or modifications, alter the original Minecraft game, which might include adding favorite cartoon characters, adding new buildings or simply changing the appearance or function of basic blocks in the game.
Minecraft does not operate properly without a modding API to help make mods compatible with the basic game and make multiple mods compatible with each other. The most common modding APIs are Minecraft Forge and Modloader. The game cannot support two different modding APIs, so choose one and only download mods compatible with the selected API.
Step 1: Downloading compatible mods
Download a Forge or Modloader-compatible Minecraft mod to the computer. Look for mod download links on Minecraft mod websites and Minecraft forums. All Minecraft mods should have .jar or .zip as the file type. Save the file to the computer instead of simply opening the file.
Step 2: Opening Minecraft folder
Open the Minecraft application folder on the computer. Type Minecraft into the search feature on a PC or Mac to help find the folder.
Step 3: Copying to folder
Click and hold the mod folder from the download location. Drag it to the Minecraft application folder and release the mouse to move the file into the Minecraft folder. It may take a few minutes to transfer the file, depending on computer speed.
Step 4: Running mods
Launch the Minecraft game. Click on the Mods button to see the installed mods. The newly installed mod should be included in the list.
Step 5: Deleting unwanted mods
Open the Minecraft application folder. Right-click on a mod and click to delete it. Alternatively, left-click and drag it to the computer's recycle bin. Select and delete individual mods to remove them from the game. Mods must also be deleted and updated versions installed whenever the Minecraft game is updated to a new version.