Free
Rating summary
About
Most trivia games ask for the right answer. Knowtilus asks for the RARE one.
Every prompt is open: "Name a moon in the solar system." "Name a type of spider." Any correct answer counts, but the fewer players who said it, the deeper your submarine sinks. Say "Moon"? You'll stay in the shallows. Say "Goliath birdeater"? Only 0.21% of divers thought of that, and you're plunging toward the abyss.
THE DAILY DIVE
Seven prompts. One answer each. A ticking clock. Everyone gets the same dive each day, so compare your depth with friends and see who thinks the most original thoughts.
DIVE THROUGH THE OCEAN ZONES
Descend from the Sunlight zone through Twilight and Midnight to the Abyssal and Hadal depths. Each zone has its own creatures and atmosphere, drawn in hand-crafted pixel art.
9 CATEGORIES, 100+ LEVELS
Nature, Science and Space, History, Geography, Culture and Art, Technology, Sport, Food and Drink, and Everyday Life. Each category has its own map to dive down, level by level. Earn up to 3 stars per level and climb the ranks from Snorkeler upward.
PVP DUELS
Challenge other divers head to head. Common answers won't save you here.
COLLECT AND LEVEL UP
Earn XP, open chests, fill your collection, and share your deepest dives.
Short sessions, real knowledge, and a reason to think one step past the obvious. Grab your helmet. It's time to dive deeper.
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What's New in Knowtilus
1.0
October 30, 2026








