Flat Cube: 2D Brain Cube

8/3/2025

1. Replace 10x10 and 12x12 cubes with 6x6 and 8x8 cubes, and adjust the difficulty downward.
2. Modify cube tiles and background to have a more three-dimensional appearance.
3. Fix the color order to Red, Orange, Green, and Blue.
4. Revise the game guide.