Space Pirates
Spies, Secret Agents, and Espionage
Scary, Sexy Alien Robots
Marine theme (sailors, researchers, divers, marines, people on boats/ships etc., the entire world could be like 99% ocean)
Psychological Horror
Time Travelers
The Middle Generation of a Long-haul Generational Ship. Never seen where they're from, will never see where they're going.
Social Deduction (Ex: Among Us)
Bloodborne-esque. Or forbidden knowledge and outer worldy horror
Slavic mythology
Special Weapons and Tactics
Uncontrollable/Hard to control powers
An entire team made up members who are all different flavors of chuunibyou
The team is an MMO raid party and the holy trinity roles are literal
The adventurers delve into the bodies of giants/giantesses to help them fight off parasites and magical infections and other bodily invaders, like a more literal Osmosis Jones
Space Whaling
Human Torso, Anthro/Animal Legs
Holy Slut Martyrs
Mobsters
Space Operas and Epics
Private Military Company
Cascadia
Artificially-created. Can range from homunculi to AI to golems, etc.
(Evil) Corpos
Rebels Fighting Something like an Evil AI or Empire
World with a Quirk that Shapes its Societies in a Novel Way
Tiny Adventures
Final Journeys
Practical Adventurers (Bondrewd, Ozen, Lyza, and Srajo from Made in Abyss as examples)
Big Eaters
New Perspective
Nuclear Holocaust
Uncontacted Civilization
Videogame Worlds (the team chooses a videogame universe that their bots are all a part of)
Star Wars (or Star Wars knockoff)
Space Idols and Musicians (Ex: Macross, Interstella 5555, Alien Stage, Etc.)
Cyberpunk
Lone Wolves and Edge Lords
Transportation
Folklores Turned Modern
Mecha
Space Cowboys
SPACE DISCO
Retired Soldiers/Warriors
Bounty Hunters Hunting the Other Event Cards
Entities with nonlinear, nontraditional ways of thinking (like Hiveminds)
Fantatical Purifiers, Determined Exterminators and Devouring Swarms (like in Stellaris)
An Empire in Decline
"I Used to be a 2020 Hyperbrat but Now I'm Stuck Inside a Vending Machine!?" (ex., a mesugaki could end up as a Roomba, or printed out twice and meeting each self)
Weird Space Tentacle-Thing Rulers (ex., humans kidnapped and reshaped by some weird sort of alien hive/overmind and now ruling over an alien society)
Commies in Space™
Space Gangs of New York
Vintage Space/Retro Futurism
Living Lab Experiments
Shrine Maidens
Derelicts
A group where one adventurer has a legally distinct behelit and is looking for friends to sacrifice on some day with an eclipse, and they make it increasingly and hilariously obvious, but the others are either completely unaware or they think it's a funny bit and ignore all the red flags.
Adventurers stupidly going on quests to unseal dangerous, world ending gods thinking they'll be their wives for their trouble
Hags
Corrupt/Crooked Adventurers
Space Cops
Star Fox (ripoff or similar world, space anthros basically)
Symbiotes and Parasites
Steampunk
Mining guild! Miners!
Space exploration! Gunships! Space mechanics! Giant spaceship that acts as a mobile port and small city for spacers!
Toxic Yuri Lesbian Agenda
ALL YOU NEED IS KILL (not the light novel, I mean ULTRAVIOLENCE)