1
One player sees a hidden target on the dial.
One player peeks at the hidden scoring zone — a fat 4 in the middle, 3s and 2s to either side. Nobody else sees where it sits.
Boardee Arcade · Party & social
Spectrum
Guess where it lands on the spectrum.
One clue, one dial, and a team trying to read one mind. It turns opinion into a team sport — and doubles as the best discussion warm-up you'll run all week.
Also known as: wavelength · hot and cold
👥 2+ Players✨ AI fills the content
- Free for teachers · students never need accounts
How to play
Guess where the clue lands on the spectrum.
That's the goal — no rules to teach. Here's how a round of Spectrum runs.
2
They give a clue between the two extremes.
They name something that lands on that spot — “homework”, somewhere between underrated and overrated — and that clue is all the class gets.
The team moves the marker to guess the spot.
The room argues it out and drags the needle. Reveal swings the screen open and scores the guess on how close it landed — 4 for a bullseye, down to 2 at the edges.
Ways to play
One dial, three ways to run the room
Spectrum lives on the projector — no student devices, no logins. Same dial, whichever way your class plays best.
Whole class, hands up
Project one dial and the whole room plays it together — the class calls out “left a bit… no, middle!” while you (or the kid whose turn it is) drags the needle. No devices, no join codes, no setup.
Zero devices · zero prepSplit into teams
Break the room into two teams and take turns reading the dial. The score chip keeps the tally, the lead swings back and forth, and it gets loud — the good kind of loud.
One screen · the room does the restA sixty-second warm-up
Drop one prompt on the board to open a lesson or land the plane at the end. “Underrated to overrated: homework” gets every hand in the air inside a minute — then you're straight into the discussion.
One prompt · every hand involvedWhat can you spectrum?
Anything with two extremes
If two words sit at opposite ends — weak to strong, villain to hero, impossible to certain — it's a Spectrum prompt. Type the topic; AI writes the poles and the clues.
Character study
EnglishVillainHero
Clue“Macbeth”
Acid strength
ScienceWeakStrong
Clue“Vinegar”
Judge the figure
HistoryPeacefulRuthless
Clue“Napoleon”
Probability
MathsImpossibleCertain
Clue“Rolling a six”
Settlement size
GeographyVillageMegacity
Clue“Tokyo”
Hot take
DebateUnderratedOverrated
Clue“Homework”
The library
Spectrum is one shape of twenty-five
The Arcade is a library of classroom games that all drink from the same topic box. When the debate's run its course, that same topic becomes a quiz, a set of flashcards or a sorting round — same class, new game, zero re-typing.
- 25 game types, from party games to word puzzles
- One topic box fills any of them in under a minute
- Save your prompts and relaunch them any lesson
Three ways in
Three ways to get a Spectrum
Ready-made from the Discover shelves, AI-built from your topic, or typed by hand — every door ends at the same play button.
Grab one ready-made
Search the Discover shelves — curated games plus rounds shared by other teachers. Find one that fits and press play.
Ask AI to build it
Type what you're teaching and the Arcade writes your Spectrum in under a minute. Check it, tweak anything, play.
Type it yourself
Every Spectrum has a plain editor underneath — your exact list, row by row, no AI in the loop.
Built for the classroom
AI fills it. You press play.
Every Arcade game starts from the same box: type what you're teaching and the content writes itself — questions, words, clues — ready for the board at the front of the room.
- Real content on your topic and grade — skim, edit or reroll before the class sees it
- Big type and chunky buttons, readable from the back row
- Students join with a code and a name — no accounts, ever
25
Game types in the Arcade — one topic box fills them all
60s
From typing a topic to pressing play
0
Student accounts — a code and a first name is the whole login
3
Steps every time: type it, check it, play it
I typed 'the water cycle' and had a class quiz in ten seconds flat. It's the first tool my whole department adopted.
FAQ
Good to know
How many students can play?
Two or more — one clue-giver who can see the hidden target, and everyone else as the guessing team. Whole-class works beautifully.
Is this like Wavelength?
Yes — the same hidden-target dial game. The clue-giver names something between the two extremes, and the team argues its way to a spot on the dial.
Do students need devices?
No. One screen on the projector and a room full of opinions is the whole setup.
Can I use my own prompts?
Yes. Write spectrum prompts that fit your class, or let AI suggest them for your topic and grade.
Do students need accounts?
Never. Students join with a code and a name — no emails, no passwords. Teachers don't need an account to try it either.
Same box, different shape
More party & social
Same three steps, different game. Type a topic and pick your shape.
What are you teaching tomorrow?
Type it in, check the content, press play. The Arcade does the rest.