NumberSequence_

The game

A short-term memory puzzle. Numbered cards appear on the board for a moment, then flip face-down. Tap them back in ascending order before the timer runs out. Every stage adds a twist, until the last one: fifteen cards and not a single mistake allowed.

1. 01

   Numbered cards are dealt onto the board. Memorise where each one is.

2. 02

   After two seconds they turn over and the clock starts.

3. 03

   Tap the cards from the smallest number to the largest. A wrong tap costs one of your three lives.

4. 04

   Clear the board to move on. Lose all three lives and the run is over.

How it gets harder

The board starts at four cards and grows to fifteen. At each size the rules tighten before another card is added:

• // Classic: the numbers run 1, 2, 3 and so on, in order.
• // Random values: any numbers from 1 to 25, so you can't just count.
• // One stays up: a single card never turns over, to throw off your count.
• // Staggered flips: cards turn over at different moments instead of all at once.
• // The swap: once they're face-down, two cards trade places.
• // Final stage: fifteen cards, and one mistake ends the run.