Building comparison
head to head
Project ZomboidvsStarbound
Neither is meaningfully harder - they pose close to the same test. The widest gap is variance, and it is a single point.
Project Zomboid
Optimization · Pure Optimization
A zombie survival sim where long-term planning outweighs moment-to-moment skill.
Starbound
Optimization · Pure Optimization
A 2D sandbox of procedurally generated planets driven by crafting progression.
Project Zomboid leans Optimization (Pure Optimization); Starbound leans Optimization (Pure Optimization).
Project ZomboidStarbound
Axis by axis
Execution3 vs 3
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Project Zomboid
Combat is deliberate; precision matters but is slow.
Starbound
Light platforming and combat, generous margins
Reads0 vs 0
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Project Zomboid
Zombies follow scripted behaviour; no adaptation.
Starbound
Procedural NPCs follow simple fixed behaviours
Variance5 vs 4
Project Zomboid leans a little harder on variance, though the gap is small.
Project Zomboid
Loot spawns and zombie distributions randomized.
Starbound
Procedural planets and loot keep early exploration unknown
Optimization8 vs 7
Project Zomboid leans a little harder on optimization, though the gap is small.
Project Zomboid
Skill grinding, base setup, and routing define survival.
Starbound
Gear tiers, farming, and progression routes dominate
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.