Religion

JRogue (RF0)
In JRogue, you have three options for worship: the Hunter, the Mage, and the Warrior. Altars appear on dungeon level 4.

You select your god as soon as you click on an altar. On the bright side, you're not locked into your selection, and can switch at any time.

The Rogue Fable (RF1)
There are references to altars in the code, but none seem to appear.

Rogue Fable II (RF2)
In Rogue Fable II, you can align yourself with a religion.

If you are already aligned with a religion, you won't be able to join another, though altars will still be generated.

One can strategize with any of these. However, Wealth only provides gold on initial join-up; take that into consideration when choosing.