Eidolon: Fate of Fools is a largely traditional arena shooter focused on fostering engagement between players in casual first-person combat. Players each start with the same base abilities, and additional abilities are found within the arenas. Abilities are represented by cards and each combatant’s loadout is capped by hand size; however, cards are discarded when they run out of ammunition or if a special alternate-fire effect is used. Combatants compete for the most kills until the match ends.