Number Sequence by Elio Landa is a puzzle game in which players create connected lines of numbers that follow a correct sequence to match target values on the board. Sequences can increase or decrease, and the direction depends on the starting number. When the initial value is greater than one, the sequence often flows in reverse. As players advance, they encounter puzzles with multiple starting values, requiring them to plan and build several interconnected sequences at once. The game develops mathematical thinking for K–5 learners by encouraging counting forward and backward, identifying patterns, comparing numbers, and reasoning about how sequences grow or shrink as they move from one value to the next.