QUERYcleaning up the puzzle gallery the skull achievement
The Skull Achievement: Which Modes Count?
DIRECT ANSWER
The Skull requires 100 solved puzzles. In a developer reply, custom modes do not count because max skills and lower piece counts could make the condition easy to exploit. A player in the same thread reports that challenge modes count; that part is community evidence, not an official rule table.
- Condition
- Solve 100 puzzles
- Custom modes
- Developer says no
- Challenge modes
- Player-reported yes
ELIGIBILITY REGISTER / 25
Separate source authority from player observation
The condition is official; the thread contains both a developer rule and an E2 follow-up.
| Mode | Evidence status |
|---|---|
| Base gallery | Primary route implied by official condition |
| Custom modes | Developer says they do not count |
| Challenge modes | Community-reported to count |
Why this page exists: A player wants to know which modes count toward the 100-puzzle achievement.
The official condition
Steam exposes the achievement as solving 100 puzzles. It does not publish a mode-by-mode eligibility table on the achievement page.
Custom modes are excluded in the developer reply
The developer explains that custom setups can combine maximum skills and low piece counts, so those modes do not count. That direct developer statement is stronger than an anonymous guess, though it can still become version-sensitive.
Challenge counting is community evidence
A player in the same thread reports that challenge puzzles—including The Big White—counted. This site has not reproduced that result and labels it E2 rather than turning it into an official promise.
SOURCE LEDGER / PUZZLE COUNT
Follow every claim to its evidence.
E1 is first-party. E2 is a community observation or route. Later official updates can supersede version-sensitive details.
- E1Official Steam achievement conditionschecked 2026-08-09↗
- E2Developer answer and player follow-up: Skullchecked 2026-08-09↗
- E1Official patch notes — v1.3.22026-08-08↗
Publication limit: Custom exclusion comes from the developer; challenge eligibility is a player report and was not independently tested.