I still remember getting my first Game Boy back in 90’s when I pass my exam. Although it just a dot matrix display, the games collection are excellent. My sister also enjoys playing Super Mario, Doctor Mario, and Killer Instinct, and she is a better gamer than me.
Nintendo had released several Game Boy models. Starting from the original DMG up to the Game Boy Advanced SP. You can get any model regular model from the eBay with reasonable price.
Game Boy Pocket is smaller than the original Game Boy. But compared to the limited Game Boy light, the Game Boy Pocket has no backlit.