I wrote (by hand!!) a small sci-fi horror adventure, Nest of the Circuit Roaches. It takes place on a space station or planetary outpost, and the party is tasked with cleaning out the titular Circuit Roach infestation before the swarm drains all the data & electricity.
It's system-agnostic, OSR in soul, and a good fit for Mothership, Traveller, Stars Without Number.
There are a couple of versions. The main version is the hand-written "pocketmod" booklet. But I also included a typed-up one-page dungeon and some other files and maps for ease of use.
The title came from the wonderful "Generic Room Stocker" by Michael Raston. Great inspirational resource, highly recommended.