starbound is like 75% random
planet terrain, names, level, temperatures, dungeons, villages, inhabitants, appearance, ore deposits, caves, biomes, plant life, weather, loot, available quests, shops, position in the universe (and therefore its day/night cycle), melee weapons, ranged weapons, level, energy usage, projectile speed and damage, status effects, armor provided, vehicles
hell, right down to pixels in some cases, this game is very random.