Stacks. — Help & Support

Quick answers for gameplay, purchases, ads, and account data. Last updated: July 2026.

Getting started

• Choose a mode on the play screen, optionally arm power ups, then tap PLAY.
• Tap, click, or press spacebar to drop the moving block.
• Perfect drops build combos and earn more coins.

Coins & gems

• Coins are earned by playing. Spend them on themes and effects in the Shop.
• Gems are premium currency for power ups and revives. Buy gem packs in the Shop.
• Daily free coins appear in the Shop when available (one claim per day).

Purchases

• All purchases go through Apple In-App Purchase.
• Gem and coin packs are consumable — once delivered, they cannot be restored like a subscription.
• If you were charged but did not receive gems or coins, email support with your App Store receipt.

Rewarded ads

• Watch a short ad to revive a run, double run coins, or claim a daily bonus when offered.
• Ads need a stable internet connection. If an ad fails to load, try again on Wi‑Fi.
• You can limit ad tracking in iOS Settings → Privacy & Security → Tracking.

Friends & display names

• Open Settings → Friends to set your display name and add friends with a friend code.
• Offensive or inappropriate names are blocked automatically.
• Friend codes share a snapshot of scores — they are stored on your device.

Rank & leaderboard

• The Rank tab shows friends leaderboard and your personal bests.
• Global rankings are a preview pool until cloud leaderboard ships in a future update.

Data & privacy

• Game progress is saved on your device. Deleting the app removes local data.
• Read our Privacy Policy for details on ads, analytics, and purchases.

More help

Support page · Privacy Policy