Fusion Stack

Fusion Stack is a fast drop-and-merge arcade puzzle game. Drop numbered blocks, slide them left and right, merge matching neighbors, and build higher values to chase new high scores in this addictive number-merge game.
HOW TO PLAY
• Numbered blocks fall onto a 5×8 grid — expandable to 6 columns.
• Move the active block left and right.
• Tap to drop faster.
• Merge adjacent blocks with the same value — create higher numbers and combos.
• The run ends when the board fills up.
UPGRADES AND PROGRESS
Earn coins and unlock 8 permanent upgrades: slower fall, wider board, coin bonus, longer combo window, higher offline coin cap, and more. Each upgrade helps you push for better scores in every run.
BADGES AND RECORDS
Unlock achievement badges for milestones and records — each one rewards coins. Track your best score and the highest tile you have ever built.
OFFLINE COINS
Come back to collect coins earned while you were away. The offline cap grows with upgrades — perfect for casual play at your own pace.
Drop. Merge. Stack.