🐸 Prime Jumper 🐸

Instructions

• From the current number, apply the “Jump” shown (e.g., Jump 1 Up → +1) to get the next integer.
• If the next integer is prime, type the number (e.g., 11 → 11).
• If it’s composite, type its prime factors concatenated in ascending order (e.g., 12 → 2×2×3 → 223).
• Digits only. You can type x or × — they’re ignored.
• Lives: You have 3 ❤. A wrong answer or timeout loses one.
• Red flash: briefly shows the correct next number you should have entered; the sequence continues from that value.
• Never below 2: the sequence cannot drop below 2 (from 2 it moves to at least 3).
• Game over: when lives reach 0, a ☠️ covers the screen.
• Hotkeys: S Start, Esc Reset, Enter Submit.