Activities

All activitiesPolls, quizzes, Q&A, games and more

Classroom

Classroom libraryReady-made lessons, played from phones

Game Theory
Economics
Finance
Physics
Politics & civics
Computer science & AI
Psychology
Business & management

Teams

Mingle Match
Group Mixer
Team Naming
Guess the Doodler
Doodler Decoy
Charades
Meeting Dodgeball

Works with

PowerPoint
Google Slides

Features

AI Presentation MakerA complete first draft, made of real slides All featuresThemes, charts, presenter mode and more

PricingFree and Pro plans

Hear the room
Live PollsAsk anything, watch votes land live
Word CloudsEveryone's words, one living picture
Q&A SessionsCollect and upvote audience questions
Live ReactionsEmoji bursts and instant slide feedback
RevealEveryone answers first, then you turn the cards over
Quiz & trivia
Live QuizzesTimed questions, live leaderboard
Questionable!Team trivia where everyone answers every clue
BingoSlide-bound bingo, first row wins
Play to bond
Guess the DoodlerDraw, guess, and laugh together
Doodler DecoyDraw the truth. Spot the decoys.
CharadesOne acts, the room races to guess
Meeting DodgeballTeam dodgeball, played from phones
Break the ice
Mingle MatchEveryone meets someone new, round after round
Group MixerSplit the room into new tables for lunch
Team NamingSplit the room, let each team name itself
Spin the WheelLet the wheel choose, in front of everyone
Gain & share insights
A/B TestsSplit the room, compare responses
Tier ListThe whole room ranks, and you see the split
Activity ReportsResults from your sessions, ready to share
Insights HubEngagement trends across every deck
Browse all activities
Subjects
Game TheoryPrisoner's dilemma, chicken, stag hunt — played live
EconomicsCournot, Bertrand, auctions — markets your class runs
FinanceA sealed-bid auction, a class budget, a year of risk
PhysicsMeasurements, estimates and discussion — the room is the data
Politics & civicsDebate a motion, draw districts and compare outcomes
Computer science & AIBinary with five cards: count, carry and decode
PsychologyIllusions and judgement, measured on the room's own eyes
Business & managementThe marshmallow challenge — teams build, test and plan
Featured lessons
Prisoner's DilemmaEvery pair chooses: stay silent or talk
Supply and DemandYour class's bids and asks make the curves
Tax IncidenceMove the tax bill. Who really pays?
Portfolio DiversificationSame average. Same risk?
Pendulum LabEveryone times the same swing
Fermi EstimationHow many balls would fill this room?
Also great in class
Live QuizzesTimed questions, live leaderboard
Questionable!Team trivia where everyone answers every clue
Word CloudsEveryone's words, one living picture
RevealEveryone answers first, then you turn the cards over
Tier ListThe whole room ranks, and you see the split
Explore the classroom libraryReady-made lessons your class plays from their phones
Team building
Mingle MatchEveryone meets someone new, round after round
Group MixerSplit the room into new tables for lunch
Team NamingSplit the room, let each team name itself
Guess the DoodlerDraw, guess, and laugh together
Doodler DecoyDraw the truth. Spot the decoys.
CharadesOne acts, the room races to guess
Meeting DodgeballTeam dodgeball, played from phones
Meetings
Q&A SessionsCollect and upvote audience questions
Live PollsAsk anything, watch votes land live
Live ReactionsEmoji bursts and instant slide feedback
Word CloudsEveryone's words, one living picture
Spin the WheelLet the wheel choose, in front of everyone
A/B TestsSplit the room, compare responses
After the session
Activity ReportsResults from your sessions, ready to share
Insights HubEngagement trends across every deck
Works with
PowerPointThe Decka add-in, on the slides you have
Google SlidesThe Decka Chrome extension, on your deck
Browse all activities
PowerPoint
Google Slides
Build the deck
AI Presentation MakerA complete first draft, made of real slides
Work together
Collaboration & SharingEdit live, invite teammates, or publish
Design every detail
Image FramesPhones, photos, paper, and 3D depth
Background RemoverClean image cutouts on the canvas
Presentation ThemesChange the whole deck in real time
Advanced ChartsEditable data, expressive visual stories
Bring slides to life
Video PresentationsAdd YouTube or upload your own video
Lottie AnimationsUpload crisp motion that stays lightweight
Agenda TrackerKeep everyone oriented, slide by slide
Presenter Mode & Activity RemotePresent decks and run live activities
Explore all presentation features
Pricing

Decision Wheel

Type the options, spin, and let the wheel decide. Turn on “remove each result” and nobody gets picked twice.

Options

One per line — commas are kept, so "pizza, the good place" stays one option. Up to 100.

Remove each resultNobody gets picked twice, until the wheel runs out.

For example, the wheel says

Katherine

Type your own options on the left to replace these.

Live polls, games, team activities and ready-made classroom lessons your audience plays from their phones, on the slides you already present. Plus a full presentation editor, with an AI presentation maker to draft the first deck.

hello@decka.dev

Product

Activities
Decka for PowerPoint
Decka for Google Slides
Features
AI Presentation Maker
Audience response
Free tools
Templates
Pricing

Classroom

Game Theory
Economics
Finance
Physics
Politics & civics
Computer science & AI
Psychology
Business & management
All classroom activities

Ideas

A game like Jeopardy! for your PowerPoint, where the whole room plays
Formative assessment examples, and which ones hold up
Get to know you questions
Icebreaker games, filed by the size of the room
Team building activities for work, for the room you already have
All ideas

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