Watch cells light up on a grid, then tap them back in the same order. Tests your ability to encode and retrieve spatial locations from memory.
1. Cells on the grid will light up one at a time in a sequence.
2. After the sequence finishes, tap the cells in the same order they lit up.
3. Each correct round adds one more cell to the sequence. Two wrong answers end the game.
Hard mode: Tap cells in reverse order (last lit = first tap). This engages additional working memory manipulation.