1989Wolfgang Riedesser
- Videos
- 23
- Creators
- 16
2 - 6 players30 minLight weight

2025
From BoardGameGeek
SUMMATION: Sum of X Ready for a fast-paced, strategic math card game designed to elevate your family game night. Players cleverly shed cards by forming equations that dynamically adapt to the game state. Addition is the default operator (Auto SUM) between adjacent numbers, streamlining gameplay while demanding smart thinking. Race against 2 to 5 players to be the first to empty your hand and claim victory. It's where families play, learn and connect through engaging numerical challenges. -description from the designer
SUMMATION: Sum of X has 2 videos from 1 creator: 2 how-to-play guides. They date from June to December 2025.
If you like it, try Ave Caesar, Pondscape, Big Sur or Abducktion, which share several of its mechanics.
1989Wolfgang Riedesser
2 - 6 players30 minLight weight
2025Tomáš Holek
1 - 4 players20 - 35 minMedium weight
2023Evan Katz, Josh Roberts
1 - 4 players15 minLight weight
From BoardGameGeek:
SUMMATION: Sum of X Ready for a fast-paced, strategic math card game designed to elevate your family game night. Players cleverly shed cards by forming equations that dynamically adapt to the game state. Addition is the default operator (Auto SUM) between adjacent numbers, streamlining gameplay while demanding smart thinking. Race against 2 to 5 players to be the first to empty your hand and claim victory. It's where families play, learn and connect through engaging numerical challenges. -description from the designer
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Mechanics