Gallery
Discover apps people built on Collabby by chatting. Run them, then remix to make them yours.
Element Quiz
Match element symbols, put them in order of atomic number, and open as few clues as possible to score high while learning 30 elements.
Balance Logic Puzzle
Read only how the scales tip to spot the heaviest, put all of them in order, and work out the unknown weight.
Perfect Pitch Test
Spot the odd note out, order sounds from low to high, and slide to match the target pitch exactly in a daily ear test everyone hears alike.
Color Perception Test
Spot the odd tile, order colors from darkest to lightest, and match a target with two sliders to sharpen your eye for tiny brightness differences.
Guess the Drawing
Draw the word with pictures only — no letters or numbers — so your team can guess it before the timer runs out, and see which team scores highest.
Act It Out
Act out the word on each card with gestures alone while your teammates guess, scoring points before the timer runs out.
Liar Game
Pass one phone around to check the secret word, then use turn-by-turn clues and a vote to unmask the liar who never saw it.
Ideal Type World Cup
Picking one of two fifteen times narrows a bracket of sixteen dishes—or sixteen ways to rest—down to the favourite you did not know you had, then a link shares it.
Moon Phase Simulator
Move the Moon around Earth to see how the Sun–Earth–Moon positions create the eight lunar phases.
Cell Organelles
Switch between animal and plant cells and tap each organelle to see how the nucleus, mitochondria, and chloroplasts do their jobs.
Volcanoes & Earthquakes
Push plates together, slide them past each other, or pull them apart to see how mountains, volcanoes, and earthquakes form.
Coordinates and Collision
Add to or subtract from x and y, where y grows downward, to move an object and use inequalities to tell whether two boxes collide.
Lights Out
Tap a tile to flip its light and the four around it in a cross, and switch every lamp off in the fewest moves.
Daily Number Baseball
Use strike and ball hints to eliminate possibilities and uncover the hidden three-digit number.
One-Line Drawing
Tap the dots to trace every line exactly once and find out why only one dot works as the starting point.
Schulte Table
Tap the numbers 1 through 25 in order to clock your time, then race a friend's ghost on the same daily board.
Arithmetic Puzzle
Combine two tiles with +−×÷ to hit today's target number in the fewest steps.
Heat Transfer
Heat copper, iron, glass, and wood rods and move the heat source to see how conduction differs from convection.
Dissolution & Solutions
Spoon in salt, sugar, alum, or flour and change the temperature to compare how much dissolves in water.
Separating Mixtures
Choose a sieve, magnet, filter, or evaporation and watch the particles split into two bowls, discovering which property makes the separation work.
Insect Life Cycles
Tap insects to see which ones have a pupa, and discover how complete metamorphosis differs from incomplete metamorphosis.
Rock Layers and Fossils
Stack gravel, sand, and mud into layers and clear the dirt to uncover fossils, discovering that the deeper a layer sits, the older it is.
Levers and Pulleys
Move the fulcrum and switch pulley types to see how much less force is needed to lift a load.