SUM DROP

Goal

Move and drop number blocks to make sums of ten. Clear the board and build high-scoring chains.

Create a Room

1. Choose a Mode
   Pick a three-minute sprint, endless tower, or one stage.
2. Same Conditions
   The host sets difficulty and seed. Each player attempts the same board independently.

Controls

1. Move
   Use ←·→ or A·D.
2. Drop
   Use ↓·S to soft-drop or Space/the DROP button to hard-drop.
3. Make Ten
   A connected horizontal, vertical, or diagonal line summing to ten clears. Stones break a line.

Modes

Sprint is a three-minute score run. Endless tests how long you can survive rising garbage rows. Stage plays one stage chosen by the host. The seed is shared, while player inputs and elapsed play time are not synchronized.

Scores & Resume

Scores are calculated in the browser and are not server-verified. Refresh to resume the saved board. This casual mode is intended for comparing results with friends.

Safe & Fair Play

Game results are friendly records among friends. Do not use them for monetary transactions, official tournament judgments, or anti-cheat enforcement.

Anyone who knows the room link may attempt to enter. For private gatherings, use a private room and share the link only with people you trust.

Choose Your Next Game

• Photo Puzzle — Assemble photo tiles and discover hidden places.
• Sliding Photo Puzzle — Slide tiles toward the empty slot to restore the photo.
• Sum Puzzle — Pick 1–9 tiles to reach the target sum and clear the board.