This is a pixel-style puzzle game where players drag colored blocks into the upper box. Blocks of the same color can be removed by connecting them in a line. The game is set against a deep blue night sky, with a staircase of red, yellow, green, and blue blocks stacked at the bottom, resembling a "rainbow rain" about to fall. Players score points by selecting shaped blocks (such as stars, squares, and L-shaped blocks) from the bottom to match and eliminate areas of the same color. The top of the screen displays the current score and the highest record, and a countdown prompts "Rainbow Rain is Coming" to increase the sense of urgency. Three power-ups are provided at the bottom: bombs, color swaps, and color clears, to help with crises. The game is fast-paced and tests your strategy and reflexes, making it suitable for players who like to push their limits.