Color Stack: Merge Blocks

A relaxing stacking block puzzle game.
How to play:
Drag the stacked color blocks from bottom toolbar onto the blank grid. When multiple blocks with identical top color are placed adjacent, they will merge and count toward level progress. Fill the progress bar to hit target number and clear each stage.
Game features:
- Fresh sky-themed cartoon background with green & orange two-tone stacked blocks
- Drag-and-drop simple placement operation
- Progressive target count as levels go up
- Satisfying adjacent merging counting effect