Building comparison
head to head
Neon AbyssvsSpelunky
Neither is meaningfully harder - they pose close to the same test. The widest gap is execution, and it is a single point.
Neon Abyss
Execution · Twitch Chaos
A fast twin-stick roguelite where chaotic item variance and precision shooting share the top bill.
Spelunky
Execution · Twitch Chaos
The original procedural platformer that codified the modern roguelike action loop.
Neon Abyss leans Execution (Twitch Chaos); Spelunky leans Execution (Twitch Chaos).
Neon AbyssSpelunky
Axis by axis
Execution7 vs 8
Spelunky leans a little harder on execution, though the gap is small.
Neon Abyss
Fast twin-stick shooting against dense waves demands real input precision
Spelunky
Tight platforming and whip control under constant threat.
Reads0 vs 1
Spelunky leans a little harder on reads, though the gap is small.
Neon Abyss
Enemies are scripted; no adaptive behaviour exists
Spelunky
Enemy AI is scripted; no adaptive opponents.
Variance7 vs 7
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Neon Abyss
Item pool is enormous and chaotic; runs diverge unpredictably
Spelunky
Procedural caves and item rolls shape every run.
Optimization5 vs 6
Spelunky leans a little harder on optimization, though the gap is small.
Neon Abyss
Synergy stacking with passive items rewards pattern recognition
Spelunky
Hell route and shortcuts reward solved knowledge.
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.