Classic
A hand-curated question bank — free and offline.
41 categories and 6 difficulty tiers per topic, gated by performance. Questions live in validated per-language JSON — no entry cost, no lives spent. Rewards scale up to +110 coins on LEGEND.
Mentium · Modes
Ten modes. Ten different experiences.
We don't design "more questions" — we design different ways to play with questions. Curated bank and AI modes share the same app, the same economy, and complement each other.
AI Category
Gemini spins up 10 fresh questions on whatever you type.
Six difficulty tiers from RECRUIT to EXTREME, per-topic 0–5★ mastery, daily streak XP multipliers and a final challenge question. Optional Mentis boost stretches the run to 60 questions.
Lightning
15 questions, 10 seconds each, combo multiplier.
Pure speed on the topic you pick. Bonus points for fast answers, combo streaks, and an optional +5 s extension per gem.
Traveler
Routes of 3, 4 or 6 destinations with a persistent passport.
8 questions per destination, 15 s each. Up to 150 countries collected, plus interpreter and emergency-visa lifelines paid in Mentis. Rewards scale with route length.
Nexus
An infinite chain: each correct answer unlocks a linked topic.
Gemini narrates the unexpected link between topics. Three lives, personal best tracked locally, smart bias toward your weak spots whenever a natural connection exists.
Detective
A unique case with free-form conversational interrogation.
Each mystery is AI-generated: case, six clues, five suspects, narrative setting. Interrogate freely, confront with evidence, stage face-offs. Accuse with confidence to multiply the reward.
Debate
Defend a stance on 30 controversial topics.
Four tiers with AI-calibrated accuracy. An advantage bar replaces points, AI replies arrive per question, gem-purchased counter-arguments help when stuck, and Gemini delivers a verdict-style closing.
AI Battle
Six rivals with their own personality, specialty and skill.
Locked progression from Recruit to Extreme. Enemy skills can block your answer, scramble options or steal time. A knockout question closes the duel with a ×2 / ÷2 multiplier.
Local Duel
Two players, one device, 8 AI questions.
Turn-based or split-screen modes, 15 s per question. Speed-based tie-break. Scores stay hidden until both players finish.
Online
Real-time PvP, curated bank or AI questions.
Firestore matchmaking with two sub-modes: Classic (curated) and AI (Gemini generates 10 questions both players answer). 20 s heartbeat, mutual rematch, direct challenges to friends.
Extra systems
Plus three daily rituals around the modes.
These aren't modes per se, but they share the app and give the game daily cadence. Smart Review is free; the rest plug into the economy.
Daily Challenge
10 globally curated questions generated daily at 03:00 UTC, anchored to each player’s language. One attempt per day, Firestore leaderboard and a scaling streak bonus.
Smart Review
Adaptive, free practice: the AI builds 10 questions on the subtopics you miss most. Each correct answer drops your counter until the "You no longer fail at X" banner appears.
Daily Wheel
One free spin a day for coins, Mentis or lives, plus an optional extra. A small daily ritual that stacks with missions and the daily challenge.