WikiCards · Card list · Science cards · Caffeine
Epic card · Science
Caffeine, an Epic card
Caffeine is a central nervous system stimulant of the methylxanthine class and is the most commonly consumed psychoactive drug globally.
- Rarity
- Epic
- Domain
- Science
- ATK
- 94
- DEF
- 88
- Power
- 182
- Wikipedia reads a year
- 600,000
Power 182 (ATK + DEF): stronger than 95 % of WikiCards cards.
Caffeine quiz: 3 questions
Three questions on the Caffeine card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its ______.
Answer
receptors. Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its receptors. From the Caffeine article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Civil rights movement. Civil rights movement 100 · Caffeine 94 · Bali 89 · Cattle 86 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
Bali. Bali 1,200,000 · Cattle 850,000 · Caffeine 600,000 · Tree 470,000 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- It is mainly used for its eugeroic, ergogenic, or nootropic properties, it is also used recreationally, often in social settings.
- Caffeine acts by blocking the binding of adenosine at a number of adenosine receptor types, inhibiting the centrally depressant effects of adenosine and enhancing the release of acetylcholine.
- Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its receptors.
Why it is Epic
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Caffeine article was read about 600,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 94 and blocks with 88: each hit it takes is cut by 35 %.
How to get Caffeine
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 Caffeine in the power ranking, all domains together.
- Alexandra FeodorovnaEpic · History · ATK 86 DEF 96
- Claudia CardinaleEpic · Arts · ATK 84 DEF 98
- Simone de BeauvoirEpic · Arts · ATK 87 DEF 95
- Civil rights movementEpic · History · ATK 100 DEF 82
- Minoan civilizationEpic · Nature · ATK 88 DEF 94
- Abdullah of Saudi ArabiaEpic · History · ATK 85 DEF 97
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Caffeine (revision), CC BY-SA 4.0. Photo : Vaccinationist, Public domain, Wikimedia Commons.




