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

Optimization · Pure Optimization
A puzzle adventure built on solving fixed alchemy and logic challenges.

Optimization · Pure Optimization
A mechanical journey adventure solved by understanding the logic of its automaton-filled world.
Lost Grimoires 2: Shard of Mystery leans Optimization (Pure Optimization); Syberia leans Optimization (Pure Optimization).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
Lost Grimoires 2: Shard of Mystery
Click-driven with no twitch demands
Syberia
Walking and clicking; zero reflex demand
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Lost Grimoires 2: Shard of Mystery
No adaptive opponent in this solo story
Syberia
NPCs follow scripted dialogue trees with no adaptive modelling
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Lost Grimoires 2: Shard of Mystery
Puzzles are fixed once examined, not random
Syberia
Linear journey with virtually no hidden-information surprises
Syberia leans a little harder on optimization, though the gap is small.
Lost Grimoires 2: Shard of Mystery
Alchemy crafting and puzzle logic are the solvable core
Syberia
Mechanical clockwork puzzles require mapping part relationships
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.