Here is how you can make an AR game:

• Choose the game genre
• Choose the game mechanics
• Choose the game engine (Unity or Unreal)
• Select the graphics type and tool (3D or 2D)
• Decide on the AR SDKs to be used (EasyAR, Vuforia, ARCore, ARKit, Wikitude)
• Select the target audience (android or iOS)
• Write the story of your game
• Create 3D models, script the game, test and iterate.