mun001 if you want to play games, then why dont you just get a game and play?
Also buy him a computer, phones are plague.
A good first game to play, depending on the development level - worms armagedon
Simple concept - 2D
You might be able to find a CD copy on ebay, or a digital copy on internet archive or if you like renting games, then any of them digital store fronts.
Making a game worth playing will take you years to make, its not a 10 min job.
If you want to make games you can start checking out godot demo projects and copy parts from them to make "fast" frankeinweenie type of a game
https://github.com/godotengine/godot-demo-projects
