Xbox 360 games on game pass?

Game Pass Games are subscription based games, and only Backwards Compatible 360 games for the Xbox One work with Game Pass.

If you have Game Pass Ultimate, which includes Gold, you can keep the Games With Gold for Xbox 360. But with only Game Pass, you can't play any backwards compatible games on the 360, and on the Xbox One, the games stop working after your Game Pass trial
ran out.

So in short: No, you can't keep Game Pass Games, be it Xbox One or Xbox 360 games. And Game Pass doesn't work on original Xbox 360 consoles at all.

Xbox Game Pass only works on Xbox one. You can not use any xbox 360 games in game pass on an xbox 360.

"Xbox Game Pass is an Xbox One, Xbox Play Anywhere, and Xbox 360 backward compatibility game subscription for Xbox One; an active subscription is required to play games."

https://www.xbox.com/en-US/xbox-game-pass

Unfortunately the Xbox 360 does not support the Game Pass. However, you can play the Xbox 360 games that are in the Game Pass on your Xbox One or PC if you subscribe to Game Pass ultimate.

You can use Game Pass for 360 games that are backwards compatible on the Xbox One.

Unfortunately, the copy protection method on the Xbox 360 console doesn't have the concept of "renting" a game.

On the 360 console, you own a game forever, or not. There is no "owning a game until your Game Pass subscription ends".

Therefore, even though there are Xbox 360 games included in the Game Pass, you can't use Game Pass on your Xbox 360 console. Only on Xbox One through Backwards Compatibility.

There are Xbox 360 games included in the Game Pass, but you can't use Game Pass on your Xbox 360 console.

Only on Xbox One through Backwards Compatibility you can play the 360 Games