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

Execution · Pure Mechanics
Namco's lavish Galaga sequel adds dimension warps and ship-stacking to classic formation shooting.

Execution · Pure Mechanics
A loud, high-endurance test of accurate crowd control against relentless scripted enemy swarms in open arenas.
Galaga '88 leans Execution (Pure Mechanics); Serious Sam: The First Encounter leans Execution (Pure Mechanics).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Galaga '88
Precise dodging and shooting through dense dive patterns.
Serious Sam: The First Encounter
Sustained accurate fire against enormous enemy hordes demands constant aim
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Galaga '88
Aliens attack on choreographed scripts.
Serious Sam: The First Encounter
All enemies are scripted and follow fixed rush patterns
Galaga '88 leans a little harder on variance, though the gap is small.
Galaga '88
Dive timing and dimension-warp triggers vary.
Serious Sam: The First Encounter
Enemy placement is consistent across runs; no hidden information
Galaga '88 leans a little harder on optimization, though the gap is small.
Galaga '88
Triple-ship management and warp routing reward planning.
Serious Sam: The First Encounter
Enemy priority and positioning strategy are learnable but shallow
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.