STRUCTURES · CURIO CARD 46 / 48
Clock tower
tower with a large clock that can be read from afar. This source-backed topic becomes an original Spiral swarm challenge.
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Play Clock tower
Enemies sweep along expanding rotating paths with angled shots. Follow the space opening between the arms instead of camping in a corner.
Signature: Pendulum Sweep. The shots curve back like a pendulum. Watch where the arc crosses your lane. This is fictional battle design, not a claim about the real subject.
Source: Wikidata Q853854 · English Wikipedia topic. Summary: Wikidata CC0 description. Wikidata structured data is CC0; no article prose or photographs are copied here.
Default challenge: v2 rules, seed 457356. A shared link can carry another valid seed. Automatic weapon upgrades do not count as assistance; deliberately claiming the Super Weapon counts one and guarantees a clear.
How this card plays
Enemies sweep along expanding rotating paths with angled shots. Follow the space opening between the arms instead of camping in a corner. The first warning introduces Pendulum Sweep. Later volleys alternate between that signature and the formation pattern. Survive three waves to earn a clean clear, or take one free assisted clear.