Who said "The game's afoot!"?

This quote is attributed to Queen of Hearts.

The game's afoot! - Queen of Hearts

"The game's afoot!"

Queen of Hearts Adventure

Character in Alice's Adventures in Wonderland

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"Off with her head!"

"Off with their heads!"

"Sentence first—verdict afterwards!"

"You couldn't have it if you did want it."

"The greatest adventure is life itself."

"The adventure of life begins with a single step."

"Adventure finds you when you stop running."

"Fortune and glory, kid."