Sum 61

Contains adsIn-app purchases
Content rating
Everyone
50+
Downloads
Content rating
Everyone
Learn more
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About this game

Sum 61 is a fast-paced math strategy card game built around reaching 61 before anyone else does.

Play cards, plan your moves, and outthink your opponent in short tactical matches. Sum 61 blends mental math, card timing, and puzzle-like decision making into a clean competitive game.

Features:
- Fast number-based card battles
- Online rooms with shareable room codes
- Solo puzzles and practice modes
- Leaderboards and profile progression
- Customization unlocks
- Simple rules with strategic depth

Sum 61 is free to play. In-app purchases may be available for optional cosmetic items or memberships and do not provide cash rewards, NFTs, cryptocurrency, gambling, or real-money prizes.
A fast-paced math strategy card game where every move counts.
Updated on
Sep 2, 2026
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Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, Financial info and 2 others
  • This app may collect these data types
    Location, Personal info and 4 others
  • Data is encrypted in transit
  • You can request that data be deleted

Whatโ€™s new

Fixed incorrect ads loading.