Over Stacks is a number-stacking puzzle game for iPhone. Drop tiles, match equal numbers to merge them, and set off chain reactions for huge scores. Just don't let things overheat.

How to play

• Match to merge: equal numbers that touch fuse and double. Merges that trigger more merges become chains worth far more.

• Mind the heat: every merge heats its lane. A lane that hits 100% overheats and locks until it cools. Run out of open lanes and the run is over.

• Hit Vent: merges charge the Vent button. When it's full, tap it to cool every lane, unlock overheated ones and cleanse cursed blocks.
  
  

Special blocks

• Volatile: explosive merges that spike heat.

• Frozen: vents its lane when it lands.

• Cursed: charges the Vent, but runs very hot.

• Prism: wild. Merges with any equal or bigger neighbor.
  
  

Controls

• Drag anywhere to steer

• Tap a lane to jump

• Swipe down to slam

• Swipe up to lift
  
  

Features

• Plays completely offline, even in airplane mode

• Game Center leaderboards for your best score and a new Daily Challenge every day

• Achievements, titles and unlockable themes, including custom ones

• Real iPhone haptics for every tap, thud and chain

• No ads, no accounts and no data collected
  
  

Availability

Over Stacks is in beta testing now and is coming soon to the App Store for iPhone.