head to head
Fallout: New Vegas asks more than Zoo Tycoon, and the gap is execution.

Optimization · Pure Optimization
A faction-driven RPG-shooter where build and route planning shape every ending.

Optimization · Pure Optimization
A classic management sim about building profitable, animal-friendly zoo exhibits.
Fallout: New Vegas leans Optimization (Pure Optimization); Zoo Tycoon leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
Zoo Tycoon
Mouse-driven building, no time pressure
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
Zoo Tycoon
No opponents
Fallout: New Vegas leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
Zoo Tycoon
Animal needs are deterministic once learned
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
Zoo Tycoon
Exhibit suitability, finances, guest flow are solvable systems
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.