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
First-person puzzle adventure unraveling a Lovecraft-tinged island mystery.

Optimization · Pure Optimization
A linguistic deduction game where each tower language must be decoded through patient observation and hypothesis.
Call of the Sea leans Optimization (Pure Optimization); Chants of Sennaar 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.
Call of the Sea
Walking and clicking, no dexterity test
Chants of Sennaar
Stealth sections require basic patience not twitch reflexes
Same score on reads - which means the number cannot separate them. The difference is in what each one asks of you.
Call of the Sea
No opponent of any kind
Chants of Sennaar
Tower inhabitants follow scripted roles with no adaptive AI
Same score on variance - which means the number cannot separate them. The difference is in what each one asks of you.
Call of the Sea
Hidden solutions surprise only once
Chants of Sennaar
Hidden glyph meanings require exploration to uncover
Chants of Sennaar leans a little harder on optimization, though the gap is small.
Call of the Sea
Deducing fixed puzzle logic is the whole game
Chants of Sennaar
Deciphering each language layer is a systematic closed deduction problem
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.