Color Block Jam Level 815 challenges players with multiple locked keys spread across a wide and colorful puzzle grid. Your main goal is to collect all five keys to unlock the ice blocks containing the numbers 9 and 12. What makes this level tricky is that several keys are buried behind vertical sliders and color walls that need sequential clearing.
Start by working your way through the orange and green blocks near the top-left corner to free the first key. Then, focus on creating space in the bottom-middle section by removing the wide purple and red blocks. This clears a path for the center and lower keys. Use the vertical orange and blue sliders near the right edge cautiously if you block them early, you’ll trap the last key or miss the exit window. It’s important to constantly shift your perspective across the board to avoid over-committing to one area.
Level 815 is about layered problem-solving: start unlocking methodically from the top left, manage space efficiently, and always keep your vertical sliders free for late-game moves.