A 3D game for toddlers: tap the cow, pig, sheep and friends on a little island to hear their names and noises, shake the trees for apples, or play Where's the pig?

Ten-pin bowling in 3D with a bear that cheers you on. Up to four play round one phone or tablet, against each other or the computer, as the lane swings round to each bowler. Or play on phones on the same Wi-Fi, with no server: they join by scanning each other's QR codes. Swipe to roll and curve the swipe to hook

A game for small children: let the cat in through the cat flap, then tap to give it dinner, water, treats and fish until it curls up in its basket to sleep

Five, six or seven lettered balls land in the rack: spell every word hidden in them to fill the card, and shout house when one word uses every ball

Four tap-only games for toddlers starring two grey cats and their friends: hide and seek, bubble popping, guessing silhouettes and counting fish into a bowl

Flick marbles into the rings and knock your rivals into the hole, watched over by some very opinionated cats. For up to four players and computer opponents around one screen

Five tap-only 3D games for toddlers with a herd of cows, horses, foxes and friends: peekaboo, all fall down, bedtime in the barn, find the same and pairs

A family quiz show for Christmas: a 1960s TV studio on the big screen, a buzzer on everyone's phone, joined by QR code over the same Wi-Fi, and a toddler button with real power

A little 3D island for small children to poke at: cars and a steam train trundle round, a volcano erupts, dinosaurs graze, parachutists drop from aeroplanes, and everything reacts when tapped, by day or night, in four sizes of town

Animated bears dance on a light-up disco floor to the beat of whatever they hear: the microphone, a song file, a built-in groove or tapped tempo. Ten routines from the Moonwalk to the Macarena, for one to four bears

Blobs of glass at your command

A fast, smooth explorer of the Mandelbrot set and its relatives, the Tricorn, Burning Ship and Cubic Multibrot, and their Julia sets: zoom deep into them, randomise, and browse nearby variations of colour and place

Drop inks onto a virtual marbling bath and comb them into swirling Florentine patterns

Feed in any text and dial up the gibberish index to generate new phrases in the same style

Persian, Anatolian, Caucasian and Turkmen rugs generated knot by knot from the grammar of real carpets: borders, field, medallions and motifs, shown as wool pile, as a weaver's cartoon or on the floor of a room, with randomise and eight-way exploration

Thousands of dots on a spinning sphere, cube, doughnut, water drop or cloud, sized by the light falling on them: flick it, move the light, and breed new variations

Photorealistic sunsets computed from the physics of sunlight passing through air, haze, cloud and water: start from one of 43 real photographs, then randomise, explore nearby skies and export HDR pictures

Hide a photo in a field of parallel lines, then squint to see it reappear

Turn PNG, WebP, TIFF and other images into JPEGs, cropped and resized alike, one at a time or a whole folder into a ZIP

Draw Celtic knots freehand: strokes become woven ribbons, and a tap on a crossing flips which strand passes over

Open an SVG and weave it: wherever closed shapes overlap, a click cycles which one passes over the top

Print and fold lenticular pictures that change as the observer moves

A guitar tuner built like a chart recorder: it listens through the microphone, spots the string you play, and plots its pitch on paper that scrolls up from the pen, with reference tones for eight tunings

Quantise a photo to black and white and trace it into a vector drawing, downloadable as SVG or PDF