I would give them a Game Boy Pokémon game with no battery and burned contacts. That way he won't be able to save, nor replace the battery.

Desert Bus.

Only 51. One of the games crashed on the start screen, at least in the AVGN video.

Cyberpunk 2077 on a PS4 without internet so he will be stuck on the bugged launch version. He needs to play it before anything else can be played.

Some F2P game that will hook and bankrupt them. Or that dummy version of Arkham Asylum the devs deliberately sabotaged.

I forgot about that. Actually, I think more than one game crashed? 

Gran Turismo 5 (B-Spec only).

Dreamlight Valley. It scratches that Animal Crossing itch and puts you in this magical wonderland of Disney characters, but every time you go to a menu, finish cooking, grab a magical orb while doing a task, or even just walk, the game crashes and forces you to wait for an incredibly long load time to start up.

It’s the perfect game for this since it both addicts you and punishes you in equal measure, but you love it too much to quit.

World of Warcraft

In the hope that he starts playing it obsessively at the expense of the rest of his life.

@Spade 

Kingdom Hearts