If you're an old school gamer you've undoubtedly heard of Tékumel, the game world created by professor M.A.R. Barker.
During the 70s Dungeons and Dragons was developing a milieu that was heavily influenced by Tolkien's European viewpoint. Barker went in a much different direction, creating an incredibly detailed world based on more esoteric Eastern traditions and history with a sprinkling of weird fantasy. To this day it's probably the most fleshed out gaming world ever created.
One of the really fascinating parts of Tékumel is that it features multiple, fully developed languages and scripts. The Tékumel site includes half a dozen fonts based on those writing styles, including the Tsolyáni script pictured here. They're fascinating in and of themselves, but from a prop making perspective they have the advantage of looking appropriately alien and being truly obscure.
Here's a "Quick Brown Fox" map of the reverse Tsolyáni font using all caps.