WikiCards · Card list · Science cards · Io
Rare card · Science
Io, a Rare card
Io is the innermost and second smallest of the four Galilean moons of Jupiter.
- Rarity
- Rare
- Domain
- Science
- ATK
- 88
- DEF
- 97
- Power
- 185
- Wikipedia reads a year
- 430,000
Power 185 (ATK + DEF): stronger than 95 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- Slightly larger than Earth's Moon, Io is the fourth-largest natural satellite in the Solar System, has the highest density and strongest surface gravity of any natural satellite, and the lowest amount of water by atomic ratio of any known astronomical object in the Solar System.
- With over 400 active volcanoes, Io is the most geologically active object in the Solar System.
- This extreme geologic activity results from tidal heating from friction generated within Io's interior as it is pulled between Jupiter and two other Galilean moons, Europa and Ganymede.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Io article was read about 430,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 88 and blocks with 97: each hit it takes is cut by 39 %.
How to get Io
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Io in the power ranking, all domains together.
- Satyajit RayEpic · Arts · ATK 87 DEF 98
- SofiaEpic · Society · ATK 92 DEF 93
- Vijayanagara EmpireRare · History · ATK 87 DEF 98
- Emma GoldmanRare · History · ATK 87 DEF 98
- Gustav MahlerRare · Arts · ATK 85 DEF 100
- John GielgudRare · Arts · ATK 85 DEF 100
Card lists
- All cards from A to ZEvery card, by name
- Nature cards600 cards
- Science cards600 cards
- History cards600 cards
- Arts cards600 cards
- Society cards600 cards
- Tier listS and A tiers by power (ATK + DEF)
- Legendary cards136 cards
- Epic cards262 cards
- Strongest cardsTop 100 by attack
Credits
Text : Wikipedia, Io (revision), CC BY-SA 4.0. Photo : NASA, Public domain, Wikimedia Commons.



