head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Optimization · Pure Optimization
A zombie survival sim where long-term planning outweighs moment-to-moment skill.

Optimization · Systems & Chaos
Co-op survival roguelite about racing the clock to gear up before giants smash your village.
Project Zomboid leans Optimization (Pure Optimization); Tribes of Midgard leans Optimization (Systems & Chaos).
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.
Tribes of Midgard
Light action combat with dodges and weapon timing
Tribes of Midgard leans a little harder on reads, though the gap is small.
Project Zomboid
Zombies follow scripted behaviour; no adaptation.
Tribes of Midgard
Co-op vs scripted giants and waves, nothing adapts
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Project Zomboid
Loot spawns and zombie distributions randomized.
Tribes of Midgard
Procedural maps and random events reshape each run
Project Zomboid leans a little harder on optimization, though the gap is small.
Project Zomboid
Skill grinding, base setup, and routing define survival.
Tribes of Midgard
Resource routing and base defense priorities decide seasons
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.