head to head
Rain World asks more than Jetpack Joyride, and the gap is variance.

Execution · Twitch Chaos
An endless runner where you steer a jetpack through randomised hazard corridors.

Variance · Twitch Chaos
A brutal survival platformer where you are prey in a living, indifferent ecosystem.
Jetpack Joyride leans Execution (Twitch Chaos); Rain World leans Variance (Twitch Chaos).
Rain World leans a little harder on execution, though the gap is small.
Jetpack Joyride
One-touch dodging at rising speed is the whole test
Rain World
Momentum-based movement and spear throws are slippery and demanding
Rain World leans a little harder on reads, though the gap is small.
Jetpack Joyride
No opponent of any kind
Rain World
Predator AI is dynamic simulation, not modeling of you
Rain World leans clearly harder on variance.
Jetpack Joyride
Randomised obstacle layouts and power-up spawns each run
Rain World
Creature placement and behavior shift unpredictably each cycle
Rain World leans clearly harder on optimization.
Jetpack Joyride
Mission and gadget choices matter mildly
Rain World
Route knowledge and ecosystem mastery slowly tame the chaos
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.