Does anybody know if ‘the suffering’ original Xbox game is compatible on Xbox 360? Can’t...

If the 360 is backwards compatible with The Suffering from the original Xbox, buy them that. It's scary as ***.

The RROD is only applicable to original Xbox 360 models. OP has a Xbox 360 Slim model, which does not suffer from RRODs.

-Kii

You can play some original Xbox games on your Xbox 360 console if you have an official Xbox 360 Hard Drive.

If you’re not able to play a game that's an xbox original game, try updating your console software.

That game is on the list, what does it say when you try to play it?

List:
https://support.xbox.com/games/backward-compatibility/play-original-xbox-games-on-xbox-360

Tom Clancy's Rainbow Six 3 should be backwards compatible on your Xbox 360.

However, as Smwutches already hinted at:

If your console does not have an original Microsoft Xbox 360 hard drive, it might be missing the original Xbox emulator files required to run original Xbox games.

If you get a message the game is not compatible despite being on the
compatibility list, then check that your console has the most up to date system software (make sure it's connected to Xbox Live, and is not modified), and that you have a genuine Microsoft Xbox 360 hard drive.

I can’t connect to Xbox live on 360 back compatible games. The rest of the Xbox one behaves normally. I know it’s not a problem with my console because both my old 360 and the 360 emulator on the Xbox one do it.

I thought maybe the problem was on my end so I did a soft reset. Now the 360 emulator on the Xbox one has no profile on it. I can’t download my profile to it because it can’t connect to Xbox live. So I can’t save at all in back compatible games.

Is it a regional problem? Is it down for maintenance? The status page doesn’t mention anything.