A re-imagining of Dune 2000 which calls you to join the battle on the desert planet Arrakis "once" again. Three great houses fight for spice, the precious drug crucial to the space faring society.

Hallucinogenic maybe? Although, it is more than just a hallucinogen.

Also, I think it might be worthwhile to mention that it isn't the most important thing ever; the Ixans managed to build a FTL spacecraft that does not run off of spice.