Free digital collectible card game where you pick a historical leader and build a deck to battle in your browser
A free memory game inspired by Ayumu the chimpanzee at Kyoto University
Stage
Not given
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Founded
Not given
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Based in
US
Not given
Pricing model
Freemium
Free
Pricing
Free to play. Packs cost 4,400 gold (earned through play) or 440 gems (premium currency purchased with real money). Gems also purchase the Chronicler's Pass (battle pass) and cosmetics.
Not given
Key features
Play in web browser on phone, tablet, Chromebook, Mac or PC with no download
Choose from six historical Leaders each with passive ability, Command and three Signature cards
Build 40-card decks from five colors representing different historical themes
Duel against AI on Easy, Normal or Hard difficulty
Play against other players in ranked matches or friend rooms
Free-for-All mode for 3 to 5 players
Draft mode to build fresh decks one card at a time
Guided First Chapter campaign teaching game rules
Real history sourced from primary and institutional sources
Parental controls and spending limits for younger players
Progressive levels that add numbered squares
Flash window shrinks as difficulty increases
Three-strike game over system
Local browser storage of scores
Challenge links with shared level difficulty
Customizable flash speed via URL parameter
What makes it different
Real American history integrated into card abilities and deck building, not fictional or fantasy
Free to play with no cards sold directly; all cards earnable through gameplay
Installable as progressive web app with no download from app stores
Recommended for ages 7 and up with built-in parental consent and controls
Historical accuracy verified against primary sources with transparent sourcing
Based on genuine peer-reviewed research from Kyoto University's 2007 Ayumu experiment
No account, no download, no personal data collection
Includes detailed educational articles about the original experiment and memory science
Lost Chapters
ChimpTest