Wait, no make that all suns and all worlds, and the only way to stop them is to Spelljam to their home planet.
Tag: Monstrous Arcana
Masters of Eternal Night (1998)
The illithids want to extinguish the sun so they can conquer the world.
A Gathering Darkness (1998)
A local action reveals a vast mind flayer conspiracy.
The Illithiad (1998)
Brain eaters!
Sea of Blood (1997)
Kind of like Vault of the Drow, except with fish people.
Night of the Shark (1997)
An aggravating exercise in railroading
Evil Tide (1997)
This seems mostly like a reworking of U1.