Battlefleet Gothic
battlefleet gothic is a little-played specialist game made by GW.
it is set in some hell-hole cornere of the galaxy where warp storms have stranded a bunch of ships from various factions and now their fighting over blackstone fortresses, old as hell space stations the eldar built WAAY back in the day to deal with certain issues
factions
Of course this wouldn't be a GW game without the empire, their ships look like giant fucking vaticans with warp drives and cannons. its rumored that in the lower decks theres like...villages of lost workers, but nobody gives a shit
Chaos
Pretty similar too the imperial ships, but emo'd up.
Necron
They have like 5 different kinds of ship and according to fluff are fucking nasty to fight.
Eldar
Their ships look a lot like their vehicles- no surprise eldar can't be original.
Tau
The Tau have two choices of fleet. Their initial fleets were composed of refitted modular merchant ships and scout vessels. After getting their shit wrecked, they got together and finally built combat ships. Players have the option of the modular, adjustable, Merchant fleet or the efficient, effective Combat fleet.
Orks
Look like the most fun to paint, their ships are ramshackle at best and if you used gum instead of super glue to make them it would probably be more thematically accurate... and gross.