2D Shapes Game
Geo Storm is a free 2D shapes game for grades 2-5, played in a web browser on a desktop or laptop, with no account, no sign-in and nothing to install. One click per shape family. Geo Storm opens with only those shapes in play: holes tear open in the ship's hull, the student drags the plate with the same shape off the rack and drops it in, then turns it until it lines up and seals. A square fits four ways and an L-brace only one, so the turning is part of the lesson. Miss one and the game names the shape and the fact that gives it away (for a trapezoid, "4 sides, exactly 1 pair parallel").
Pick a shape family, press play
Triangles
Equilateral, right, isosceles and scalene. Every plate is a triangle, so the student has to read the form, not count corners. Right triangles: 4.G.A.2.
Equilateral Triangle, Right Triangle, Isosceles Triangle, Scalene Triangle
Quadrilaterals
Square, rectangle, rhombus, parallelogram, trapezoid and kite: all four sides, told apart by their sides and corners. 3.G.A.1.
Square, Rectangle, Rhombus, Parallelogram, Trapezoid, Kite
Polygons
Pentagon, hexagon, heptagon and octagon, with triangles mixed in so there is still turning to do. Naming shapes by their sides: 2.G.A.1.
Pentagon, Hexagon, Heptagon, Octagon
Rotation braces
L, T, Z, chevron and cross shapes. They fit only one, two or four ways, so this is the turning-and-matching workout.
L-Brace, T-Brace, Cross Brace, Chevron, Z-Brace
Or a whole grade
Grade 2 shapes
Triangles and four-sided shapes with their names on the plates (2.G.A.1).
Play this setGrade 3 quadrilaterals
Squares, rectangles and rhombuses next to the other quadrilaterals, named on each plate (3.G.A.1).
Play this setGrade 4 review
Triangles, quadrilaterals and polygons with side counts only, so the names have to come from the student.
Play this setShapes quiz, every family
All 19 shapes, no labels. Good for a last-week-of-the-unit check.
Play this set
Your own mix, one link for the class
The link opens Geo Storm with just that mix. Saved settings on a student's computer are left alone.
Shape names on the plates: Learning the words: every plate is labelled Rhombus, Kite, Hexagon. Side counts on the plates: Counting sides: plates say 4 SIDES, 6 SIDES, and the student matches the form. No labels (quiz): Shapes only: recognise each one from its outline. Polygons alone would be all high-symmetry shapes that drop straight in, so the polygon links bring triangles along.
More free games
Every game on the Arcade Deck is free, with no account.
- Meteor MathTimes tables: type the answer before the meteor lands.
- Fraction FleetFractions: lock onto the ship carrying the matching fraction.
- Time PilotTelling time: set or read the ship's analog clock.
- Money RunMaking exact amounts with real Canadian coins and bills.
- Code BreakerLogic: crack a secret shape code from the lock's clues.
- Word WarpSpelling: the word flashes on the warp gate, then type it from memory.
See all 12 free games · Fractions game · Times tables game · Telling time game · Canadian money game
Questions teachers ask
- Is it free?
- Yes. Geo Storm is one of the 12 games on the Arcade Deck, which is free to play with no account and nothing to install. The ten rooms on the Promenade are for members; nothing on this page needs one.
- What do students need?
- A desktop or laptop computer with a mouse or trackpad (drag a plate onto a hole, then drag to turn it) and an up-to-date browser. With the keyboard only, keys 1 to 6 send a plate to the most urgent hole and the arrow keys turn it.
- Which shapes are in it?
- Nineteen: four triangles (equilateral, right, isosceles, scalene), six quadrilaterals (square, rectangle, rhombus, parallelogram, trapezoid, kite), four regular polygons (pentagon to octagon) and five compound braces (L, T, Z, chevron, cross). There are no circles or curved shapes, and no 3D solids.
- Can I pick the shapes?
- Yes. Tick the families and the plate labels in the picker above and you get one link that opens Geo Storm with that mix. The mix lives in the link itself; we do not store anything.
- Does it go too fast for younger students?
- It opens on Rookie, the slowest setting, with one hole at a time and three plates on the rack. Teacher Setup in the game changes the speed and turns the after-a-miss lesson on or off.
- Which standards does it cover?
- Each family above names the Common Core code it practises: naming shapes by their sides (2.G.A.1), quadrilateral categories (3.G.A.1) and right triangles (4.G.A.2). It does not teach lines of symmetry, angle measures or area.
- Do students sign in, or does it collect anything?
- No sign-in and no student accounts. There are no ad trackers. See the privacy page for the details. Privacy.
- Who makes Starship Arcade?
- Starship Arcade is a small independent studio in Ontario. The games are built with AI and tested before they ship.