Pixelmon is a mod for playing Minecraft. This is an imitation of the Pokémon game, but with Minecraft graphics. You can choose Bulbasaur, Charmander, Squirty, or Eevee. You will also be able to find wild Pokemon just like in the Pokemon game.
Steps
Part 1 of 3: Download the required files

Step 1. Download Minecraft
Pixelmon is a mod, hence you need the original game to run it.

Step 2. Download Pixelmon from this mod's developer site
You can leave the icon on the desktop of your computer to make it easier to activate it later.

Step 3. Download the Minecraft Forge add-on
It is necessary for the mod to work.

Step 4. Download and install WinRAR
You will need it to extract the folders from the Pixelmon.rar file.
You can use 7-Zip instead of WinRar
Part 2 of 3: You must first uninstall the previous Minecraft
This section is a must read for those who already have Minecraft installed. If the game has not been installed yet, read the next section.

Step 1. Click on the Start button

Step 2. Enter% APPDATA% in the search field
Press Enter and folders with files will appear in front of you.

Step 3. Look for the.minecraft folder

Step 4. Delete the folder
You will need to uninstall Minecraft first.

Step 5. Close the window
After that, you can move on to the next section.
Part 3 of 3: Install Minecraft and Mod

Step 1. Click on the Minecraft.exe icon and wait for the game to load
After the game loads, register on the Minecraft server.

Step 2. Press the Play button on the Minecraft interface and exit the game immediately
You will now need to install Pixelmon.

Step 3. Go to the folder where you saved the Pixelmon mod and open it with Winrar or any other archiver
You don't need to unzip the file yet

Step 4. Click on the Start button on the desktop and again and enter% APPDATA% in the search engine
Find the.minecraft folder.

Step 5. Open this folder
Now you need to open the Minecraft Forge folder. Open it and click on Install client.

Step 6. Open a window with the RAR file
Select the "MOD" and "Database folder" folders and copy them to the Minecraft folder. They should replace existing folders with the same name.

Step 7. Start Minecraft
Click on Edit Profile. Select Use version and then Forge.

Step 8. Save the profile and click "Play"
Choose your Pokémon and start creating a new world!