If youre just wanting one where you leave it alone for thousands of hours: cookie clicker or any of the hundreds of idle games (remember that the steam deck and OLED monitors/TVs exist).
I recall as a kid leaving sonic adventure 2 on overnight and smash Bros melee to cook down the timer to unlock characters.
Alright, now name a game where you’d have to do that for thousands or even hundreds of consecutive hours, especially on a portable console.
Warframe.
If youre just wanting one where you leave it alone for thousands of hours: cookie clicker or any of the hundreds of idle games (remember that the steam deck and OLED monitors/TVs exist).
I recall as a kid leaving sonic adventure 2 on overnight and smash Bros melee to cook down the timer to unlock characters.