Starfield may have over 1,000 planets, but the ending of the game's main quest (mild spoilers incoming) involves just a single one: Masada 3. First there's a big space battle while orbiting the planet, then you have to fight your way through dozens of enemies on the surface and underground, culminating in a final battle that sees you bouncing around different dimensions to locations you visited earlier in the game.
The creation of this lengthy final quest was all very last minute, according to former Starfield lead quest designer Will Shen, and only came together out of "necessity and urgency."
