STEP 01
Drop in your lesson
Paste text, snap a photo, or upload a PDF. Any subject, any grade.
Monster Potion is free this month
Turn any ESL lesson into a spooky good game.
Drop in your lesson. Tembii writes leveled vocabulary, grammar, and reading questions, then hides them in graveyards, haunted manors, and bubbling cauldrons. You approve every one before kids play.
Free forever · No credit card
Built in 5 minutes
Just for Halloween
Five Halloween games, ready for any lesson
Same questions you'd use any other week. Just more candy, more ghosts, and a cauldron that burps.
FREE this monthFeed & grow
Monster Potion
Answer, then drop a stinky sock or false teeth in the cauldron and watch the slime monster grow.
Board race
Trick-or-Treat Trail
Roll the candy-corn dice, ride the broom, and mind the slime on the way to the candy bowl.
Hidden grid
Graveyard Dig
Read the clues to dig up candy, but one careless dig wakes a zombie.
Hidden grid
Haunted Manor Hunt
Open candlelit doors in a cozy-spooky manor and find your treasures before dawn.
Dance
Monster Dance Party
Answer, then pick a monster move and creep, howl and shuffle along with Frankenstein Tembii.
Our storyBuilt by a teacher who got tired of boring review games.
Hours spent writing questions for every lesson. Then the “game” was a quiz with a countdown timer glued on. Our students deserved real games — with characters, worlds, and stakes that make them forget they’re learning. So we built a tool that handles the questions and the game.
Around the world
Made for one classroom. Now in classrooms around the world.
200+
teachers
40+
countries, from the US to Korea
Including United States, South Korea, Vietnam, Indonesia, Mexico, Spain and 36 more.
“Tembii has made my class warmup activities go from ‘meh’ to something the students are super excited about. You can generate question sets on any topic you can think of in literally about 2 minutes. Absolutely worth it.”
Kevin
ESL teacher · United States
29 themed worlds
Real games. Not quiz wrappers.
Each world reshapes your questions into a different kind of play — competition, exploration, discovery, chance, and now puzzles you solve as a class. Use whichever fits the moment.
+23 moreBrowse all games →
No sign-up. Real game, real questions.
Five minutes, start to finish
How it works
STEP 02
Tembii brews questions
AI reads your material and drafts vocabulary, grammar, and comprehension questions matched to your students' level.
STEP 03
You approve every one
Edit, swap, or reject. Nothing reaches your students until you give it the green check.
STEP 04
Pick a world and play
29 themed worlds. No student logins or accounts — run it from your laptop, tablet, or projector, and your class plays together on your screen.
Not just any AI
AI that writes questions like a teacher would.
Most AI quiz tools spit out basic multiple choice and call it a day. Tembii generates real assessments — graded, categorized, and aligned to how you actually teach.
CEFR-aligned for ESL & language learners
Every question is mapped to CEFR (A1–C2) — the internationally recognized standard for language proficiency — so you always know exactly where your students stand.
7 question types
Multiple choice, true/false, matching, fill-in-the-blank, ordering, open-ended, and picture choice.
Difficulty grading
Every question is tagged beginner, intermediate, or advanced — matched to your students.
Category tagging
Vocabulary, grammar, comprehension, cultural awareness — organized automatically.
The approval gate
Nothing reaches your students without you.
Tembii drafts. You decide. Edit any question, swap an answer, reject what doesn’t fit. The AI never bypasses you — it’s the only way we ship to a classroom.
- Every question shows up in your review queue first.
- Edit phrasing, change answers, or regenerate any item.
- Reject sensitive topics with one tap — Tembii won't reuse them.
- Save approved sets to reuse across classes and semesters.
Your Review Queue
Question 1 of 4AI draft
What does 'commute' mean?
Answer
To travel to work or school regularly
Ready for class
0
Won't be used
0
Free to start, always
Two plans. Zero surprises.
Free
Forever$0
per teacher / month
- 3 AI question sets a month
- Unlimited manual question-set creation
- 5 game worlds
- Built-in image library
- Edit & approve every question
Most teachers pick this
Premium
For active classes$7
per teacher / month
billed annually ($84/yr)
- ~100 games' worth of AI generation / month
- Unlimited manual question-set creation
- All 29 worlds + early access to new ones
- Generate custom images with AI
- Upload your own images
- Reusable approved question banks
Try Premium free for 14 days
Card required. $0 today — cancel anytime before day 14.
From the blog
All posts
guides9 min readHalloween ESL Games: Spooky Classroom Games for Kids
Three Halloween ESL games that run on your own vocabulary list, one of them free, plus no-tech Halloween activities for ages 4 to 14. Never scary.
- tips6 min read
My ESL co-teacher is a pig who can't read
Teaching with puppets in one-on-one ESL classes: how Bruce the Pig, who cannot read, gets my students reading aloud and explaining their answers.
subjects7 min readVocabulary Games for A1 Beginners: What Actually Works
Vocabulary games for A1 beginners that respect a tiny word stock: picture-first classics plus digital review games your whole class can play.
Questions & answers
Is Tembii free?
Yes. The free plan includes 5 game worlds, 3 AI question sets a month, unlimited manual question-set creation, and full control to edit and approve every question. Premium includes all 29 worlds and about 100 AI generations a month for $9/month, or $7/month billed annually ($84/year).
What ages does Tembii work for?
We design for ages 6 through 16. Games are tuned for 1-on-1 tutoring and projector classroom play.
What subjects can I use it for?
Any subject. Paste your lesson material — ESL, math, science, history, and more — and the AI builds questions from it. Games and questions are presented in English.
Can I edit the AI-generated questions?
Yes. Every question is yours to approve, edit, or reject before it reaches a student. Nothing auto-publishes.
Do my students need accounts or logins?
No. Tembii is teacher-driven — you run the game and students play along on the shared screen. Only teachers sign in, and students never enter any personal information.
Is my lesson data shared with anyone?
No. Your lesson text is sent to our AI provider only for question generation and is not used to train their models. We do not sell or share your content.
Do I need a webcam or special hardware?
No. Tembii runs in any modern browser on any laptop or tablet. Share your screen for classroom mode.
How do I cancel?
From your account settings, any time. Your access continues until the end of the current billing period.
Your next lesson could be a monster party.
Paste a lesson, approve the questions, and play before the bell.