Explore
Discover star systems, reveal planets and moons, scan for threats, and uncover valuable opportunities before rival powers do.
What is Nebula?
Nebula is a long-form browser 4X strategy game focused on exploration, expansion, diplomacy, fleet movement, conquest and survival.
Expand
Colonise worlds, build up extraction and infrastructure, and turn isolated outposts into hardened strongholds across the map.
Endure
Alien factions do not all behave the same. Some can be managed through diplomacy. Others will happily reduce your colonies to salvage.
Inspired by Expeditionary Force, but built as its own playable strategy sandbox
If you love the tone of Expeditionary Force, you will feel at home here. Nebula lets players operate in a universe influenced by the same kind of chaos: hard military choices, dangerous alien politics, opportunistic enemies, impossible missions and the constant sense that humanity is punching above its weight. This is an unofficial, fan-inspired tribute experience and is not affiliated with the book series or its rights holders.
Featured alien powers
Some factions can be bargained with. Some can be manipulated. Some should be treated as immediate existential threats.
Rindhalu
Spiders
Ancient spider-like strategists who prefer proxies and long-term manipulation over direct conflict. Never underestimate them.
Kristang
Lizards
Brutal, expansionist, and highly aggressive. Favour overwhelming force and conquest over any form of diplomacy.
Jeraptha
Beetles
Cunning gamblers who rely on deception and opportunism. They avoid war unless the odds are heavily in their favour.
Ruhar
Hamsters
Pragmatic and cooperative. Value alliances and stability, but will defend themselves effectively if threatened.
Why players will like it
Persistent progression: fleets travel, research completes and the galaxy keeps moving.
Real alien behaviour: race attitudes, aggression and diplomacy create variety from one campaign to the next.
Meaningful logistics: expansion without planning can leave you exposed and overextended.
Military sci-fi atmosphere: the game leans into the feel of impossible odds, bitter humour and dangerous first contact.