Flippy the Train vs MathToy

Build a train track to solve digital circuitry puzzles! Flippy the Train rides the rails, flipping switches to model basic digital circuitry: NOT, AND, and OR logic gates. After building these basics, reuse them in larger tracks to create the more-complex XOR gate and half-adder. What is the fewest number of track segments required to build a half-adder? Includes a sandbox mode for creating arbitrary track for Flippy to ride.

MathToy is a box of math toys for grown-ups with a minute to spare. Six quiet games about numbers, logic and shapes: run, bend, deduce, rotate, build. No lessons, no homework, no pressure. Just open the box and play. Think of it as a pocket puzzle collection for the moments in between. Each toy takes seconds to learn and rewards a clear head. Play one round or lose an hour; MathToy is happy either way. There are no timers nagging you, no streaks to protect and no notifications begging you to come back. The games simply wait in the box until you open it again. Everything is built around the small pleasure of a number clicking into place: the moment a beam lands on the answer, a guess comes back with four H, or a maze finally shows its hidden path when you turn it. MATH GATES An endless 3D runner where your number is your life. Gates rush toward you, each carrying an operation: +7, ×2, −5, ÷3. Slide left or right, hit dash when you need speed, and dive through the one gate that turns your number into the target. Three lives: each wrong gate costs one. How far can your mental arithmetic carry you? MATH BEAM A logic puzzle on a glowing circuit board. Place gates and mirrors so a beam of light bends across the grid and arrives carrying exactly the right number. Each gate changes the value, each mirror turns the beam 90 degrees, and a faint preview shows the path before you run it. 140 hand-made puzzles move from addition to remainders, negative numbers, fractions, squares, roots and true-or-false logic. Solve with the fewest gates for three stars. MAKE 10 Four numbers, four operations, one goal. Combine them with + − × ÷ and parentheses to make exactly 10. Some answers jump out; others hide behind a clever division. A classic number riddle that never gets old, and a lovely warm-up for the brain. Stuck? Ask for the answer and see how it was done. HIT & BLOW A code-breaking deduction game. A hidden 4-digit number uses four different digits. Make a guess and read the clues: H means a right digit in the right place, B means a right digit in the wrong place. You have 10 guesses. Narrow it down, think it through, and crack the code. Your guess history stays on screen so you can compare every clue. MAZE CUBE A 3D isometric diorama maze you turn in your hands. Rotate the view to reveal hidden paths, climb ladders, step on pressure plates that switch blocks, push pale blocks into pits, and slip past the sentinels. Gates along the way change your number, so the route you choose matters. Stage after stage of small, satisfying spatial puzzles. VOXELCAD A calm block-building sandbox. Stack voxels to build any 3D shape you can imagine, paint them in a soft palette, and save your works. Undo any step, change the view, and start a new work whenever an idea strikes. When you are happy with a piece, export it as a 3D model: USDZ with colors, or STL for 3D printing. WHO IT IS FOR Adults who like numbers and a little challenge. Commuters on the train, coffee breaks, waiting rooms, the last ten minutes before sleep. If you enjoy brain teasers, mental math, logic puzzles or just fiddling with something neat, this toy box is for you. A gentle time killer that leaves your mind a bit sharper instead of more tired. FEATURES • Six math and logic games in one app • Play offline, anywhere • No account, no sign-up • Short sessions that fit any break • Dark, minimal design that is easy on the eyes • Sound on or off with one tap • Available in 22 languages ADS MathToy is free to play with a small banner ad. A one-time purchase removes the ads for good. No subscriptions. Open the box whenever you have a minute. The numbers are waiting.