Pascal's Wager began talking about Christianity....
If you believe in Jesus/God:
Jesus/God exists - go to paradise forever
Jesus/God doesn't exist - time wasted, etc
If you don't believe in Jesus/God:
Jesus/God exists - go to hell forever
Jesus/God doesn't exist - nothing
A counter-argument is that there could be other hells depending on the god.... e.g. Islam, Mormonism, etc.
But I think in those other hells non-believers don't necessarily go there (Islam?, Mormonism) or hell isn't eternal (Jehovah Witnesses?)
A small number of Christians believe that most so-called Christians are going to hell (forever) - they can say this involves a religious "demon".... that still involves a form of Christianity...
I'd assume that the God that sends non-believers to hell would be somewhat well known in order to give people a chance - though I believe in
a non-obvious God that is part of a simulation. I also believe that eternal hell (within a simulation) is impossible due to the way that simulations work - though it could last for the equivalent of a million years....
If the god who sends all unbelievers to hell is unknown then I don't think that can be factored into Pascal's Wager.
So besides in Christianity are you aware of any gods that send all non-believers to an eternal hell full of suffering?