head to head
Fallout: New Vegas asks more than RollerCoaster 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
The beloved theme park builder where you design coasters and manage every detail of a growing park.
Fallout: New Vegas leans Optimization (Pure Optimization); RollerCoaster Tycoon leans Optimization (Pure Optimization).
Fallout: New Vegas leans clearly harder on execution.
Fallout: New Vegas
Shooter inputs with VATS assist
RollerCoaster Tycoon
Mouse-driven building with no time pressure
Fallout: New Vegas leans a little harder on reads, though the gap is small.
Fallout: New Vegas
Scripted factions and enemies
RollerCoaster Tycoon
Guests are simple, fully mappable simulations
Fallout: New Vegas leans a little harder on variance, though the gap is small.
Fallout: New Vegas
Some loot and crit RNG
RollerCoaster Tycoon
Guest spawns and breakdowns barely matter
RollerCoaster Tycoon leans a little harder on optimization, though the gap is small.
Fallout: New Vegas
Faction routing, perks, builds heavily rewarded
RollerCoaster Tycoon
Park layout, pricing, and coaster stats 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.