Rule Flip
Una carta, due regole · la metà in alto chiede della lettera, quella in basso del numero. Applica quella giusta
About PlayMemorize Rule Flip
Rule Flip is a set-shifting game built on the classic clinical task-switching paradigm. A card showing one letter and one number lands in the top or bottom half of a split board · and the half it lands in decides which rule you apply. Top half: is the letter a vowel? Bottom half: is the number even? Answer yes or no.
How a round works. Look at where the card sits before you look at what it says. A card reading "K 4" is a no in the top half (K is a consonant) but a yes in the bottom half (4 is even) · the same card, opposite answers, decided purely by position. At lower difficulty the rules are captioned inside each zone; from difficulty six the captions disappear and you hold both rules in working memory.
What it trains. Cognitive set-shifting · the ability to change which stimulus dimension you respond to on an external cue. This letter-number split-screen design is a standard laboratory instrument for measuring switch costs, adapted here into a streak game.
Strategy. Verbalise the active question the instant the card lands ("top · vowel?") before reading the card. Most errors come from answering the letter question about the number, or vice versa · not from not knowing whether 7 is odd.
Part of the PlayMemorize family of brain-training games. Runs entirely in your browser, works offline as a Progressive Web App.
FAQ
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What is Rule Flip?
A rule-switching game. A letter-number card lands in the top or bottom half of the board; the top half asks whether the letter is a vowel, the bottom half asks whether the number is even. You answer yes or no, and one wrong answer ends the streak. -
Why is the position the whole game?
Because the same card gives opposite answers depending on where it sits. The skill being trained is switching which rule you apply on an external cue · not spelling or arithmetic, which stay deliberately trivial. -
Which letters count as vowels?
A, E, I, O and U. Y never appears, precisely because languages disagree about it. -
Does it get harder?
Yes. At lower difficulties each zone shows its rule as a caption; from difficulty six the captions vanish and both rules live in your working memory. -
How does my progress save?
Your best streak is stored locally in your browser. Sign in to sync it across devices.