Quick brain games. Nothing extra.

ThinkMantis turns memory, focus, language, logic, and reasoning into quick challenges you can start in seconds.

The experience is intentionally simple. No account is required, there is no long setup, and every game gets you thinking quickly.

Keep your brain sharp in the age of AI.

AI can do more thinking for us than ever. ThinkMantis is built to keep your own memory, attention, reasoning, language, and mental speed active.

ThinkMantis is not about avoiding AI. It is about staying mentally involved: remembering, noticing, switching rules, spotting patterns, solving, and responding for yourself.

Use AI when it helps. Keep your own brain in the game too.

ThinkMantis is entertainment. It does not measure or improve intelligence, ability, or any clinical or educational condition, and we make no claim that playing it produces any result outside the game.

Different ways to stay sharp.

Seven families — Write It Right, Word, Grid, Brain, Logic, Strategy and Distractor — challenge different skills without turning ThinkMantis into a lesson or textbook. Every game has Easy, Medium and Hard.

🍃 How leaves work.

Leaves are what you earn. Every correct answer, in any game, earns leaves. They are your main number — the more you collect, the higher your rank climbs (Rookie → Sharp → Fluent → Elite → Master) and the more your mascot grows (Mantis → Professor Owl → Foxy → Bolt). One number, one climb.

Your leaves are safe. The leaves you have earned over time set your rank and never go down. Spending only draws from your current balance, so buying things never lowers your rank.

How to use your leaves:

• 🧊 Bank a Streak Freeze — on the Today page, spend leaves to bank a freeze. It automatically covers a missed day so one busy day never resets your streak. Best used when you know you might miss tomorrow.
• 🍃 Shop the Leaf Shop — spend leaves on cosmetics: app colour themes, a frame for your mascot, and profile titles. Pure looks, yours to keep.
• 👑 Wager on the Weekly Boss — on the Today page, stake leaves that you will clear this week’s Boss. Clear it and you win your stake back plus an equal bonus; let the week end first and it is forfeit.

One rule: a leaf never buys an advantage inside a puzzle — no hints, skips, extra lives or time. A high score always means a sharp brain, not a full wallet. Open the Leaf Shop →

Simple on purpose.

No lessons to unlock. No long tutorials. No pressure to create an account. ThinkMantis is built for quick moments of play—one focused challenge at a time. If you enjoy it, Share ThinkMantis with friends and family and see who stays sharp the longest.

Who ThinkMantis is for.

ThinkMantis is built for players aged 13 and up. Everything on the site sits in that one band; there is no separate younger section and no “kids mode.”

Three things set that floor. The puzzles assume comfortable, fluent reading rather than decoding. Many are set in everyday adult situations — a report you are editing, a message you need to get right first time, a deadline you are planning around. And nearly every game runs on a clock, which is part of the challenge rather than an obstacle to work around.

Nothing here is unsuitable for a younger player, and a strong reader under 12 may well enjoy it. It simply was not designed for them, so we do not claim it will land.

Free on the web.

ThinkMantis is free to play right here in your browser — no account, no ads, and nothing sold inside it. No game, mode, cosmetic or advantage is ever sold separately.

Made by Switik.

ThinkMantis is one of a family of games from Switik — each one a quick, focused way to spend a few minutes thinking.

The voice you hear.

ThinkMantis's spoken commentary is AI-generated and plays on your own device. Nothing you say is recorded, and the microphone is never used.

It works offline.

ThinkMantis keeps its own files on your device, so once you have opened it a run works with no connection at all.