WORLD Nº 051A NOTEBOOK TO COME BACK TOLarsdoku
A full Sudoku, a little hint, and all the time you like. Keep your notes and unfinished pages, collect your favorite finishes, or explore Lars’s complete research studio.
Find a lovely little thought ↗OPEN FOR WANDERING, LISTENING & A LITTLE MISCHIEF
Small games.
Wild little worlds.
Fifty-eight little worlds. One very curious arcade.
Pick somewhere to play, and bring your sound along.
THE COLLECTION
Where shall we go?
58 games to explore
No games match. Try another word.
THREE NEW ROOMS · A LITTLE INFINITY
Stay for the light.
Both of Lars’s Shader Labs have arrived, with their shared soundtrack. And a new garden: eighty original shaders, from rose-gold sculptures to glowing prime rails.
Explore Rosegold · 80 shaders ↗
INDEXINPREVIEW · A WORLD BY ITS ADDRESS
Pick a seed. Find a whole planet.
Fly around a planet, land among its mountains, and follow rivers through a world made from Lars’s ruler and indexing ideas. Or peek into the little labs that make it grow.
Explore IndexinPreview ↗A FAMILIAR PAGE. A FRESH LITTLE THOUGHT.
Make room for Sudoku.
Larsdoku has arrived: a clear, gentle start, your saved notebook, and the complete studio for curious minds.
Open Larsdoku ↗MORE FROM LARS’S GAME SHELF
Sudoku & friends
Explore 39 WSRF game and trainer pages: Sudoku variants, number puzzles, Mahjong, Reversi, and more.
Visit the WSRF game library ↗EASY AFTERNOONS
A little puzzle. As long as you like.
Big, clear clues. Hints when you want them. A comfortable place to begin.
WORLD Nº 051 · YOUR PLACE IS SAVED
One lovely square at a time.
WORLD Nº 051A NOTEBOOK TO COME BACK TOWORLD Nº 050 · A SONG THAT DIDN’T EXIST BEFORE
Find your own little beat.
WORLD Nº 050MAKE A LITTLE MUSICLantern Jam
Different lights sing. Matching lights rest. Make four little phrases, teach your partner which idea to try, and keep a song that belongs to you.
Open the music box ↗MAKE AN EVENING OF IT
Choose my game night ↗Three little stops. A song to take home.
A lantern connection, a card discovery, and something you made. Your favorites wait on a little shelf.
THREE NEW PLACES · MAKE A NUMBER. KEEP A DISCOVERY.
Prime creations.
WORLD Nº 056PRIME CREATIONSPrime Foundry
Grow enormous proven primes in a workshop of your own. Reach 1,000, 2,000, or 3,000 digits, pause at base camp, and keep the certificate.
Open the foundry ↗
WORLD Nº 057PRIME CREATIONSSafe Prime Harbor
Choose ballast to build a prime, then see whether twice your number plus one lights a second lighthouse. Six pairs make a harbor to keep.
Light the first pair ↗
WORLD Nº 058PRIME CREATIONSPrime Bloom
Arrange little digit petals to grow primes. Safe-prime partners open into golden double blooms. No timer, gentle hints, and a garden waiting next time.
Plant the first number ↗FOUR NEW GAMES · EVERY ANSWER COMES WITH ITS PROOF
The Proving Grounds.
WORLD Nº 052THE PROVING GROUNDSThe Rewind Loom
A rule 30 row, and the row before it hidden. Uncover threads until you read 0·1·0, and the loom’s memory forces the rest. Prove one thread of yesterday without looking at most of today.
Warm up the loom ↗
WORLD Nº 053THE PROVING GROUNDSThe Belfry
Twenty bells on one shift-XOR register, every period a power of two known before a single tick. Meet the order with the fewest ropes, then ring the peal and hear it keep time.
Open the belfry ↗
WORLD Nº 054THE PROVING GROUNDSRollball Tower
Climb from M31 rung by rung: weigh candidates on the wheel, prove one with a witness, and carry the whole climb away as a certificate anyone can replay in Python.
Roll the first ball ↗
WORLD Nº 055THE PROVING GROUNDSEdge Fortune
Generation one quintillion, no simulation, and the edge is still known: as many bits as the carry decides, and not one more. Call them, then stop before the open bit.
Read the first fortune ↗Rule 30 run backwards, clock banks whose periods are settled by algebra, primes that arrive with their own certificate, and an edge that is known a quintillion generations out. Nothing here is fitted or guessed; each answer is checked against Lars’s pytoolz modules. What was ported and how it was checked ↗
FOUR NEW GAMES · A FEW FRESH WAYS TO PLAY
A good hand. A little discovery.
WORLD Nº 046THE CARD ROOMDistance Draw
Two chairs on green felt. Face a trained partner, follow the rank neighborhoods, or let your model take a seat.
Take your seat ↗
WORLD Nº 047THE CARD ROOMRiver School
How much does this pocket really win? Explore the river, the turn, and the price of a call. Every answer brings a small discovery.
Follow the river ↗
WORLD Nº 048THE CARD ROOMPocket Studio
Six cards on the worktable. Pick two that belong on the board, then try the upside-down challenge: make the weakest pocket.
Open the studio ↗
WORLD Nº 049THE CARD ROOMGlow Pair Post
Matching lights cancel. Different lights glow. Pair little lantern cards, discover their associations, and carry every message home.
Open the postbag ↗The Curiosity Club.
Eight new ways to follow a clue. Find prime pairs, explore the gaps, stitch a song, pack a square, and decode a letter’s curious address. Play, watch, gently guide—and peek inside every little brain.
WORLD Nº 038NEW · CURIOSITY CLUBCagelight Sudoku
Sora tends a 6 × 6 garden of numbers. Fill each row, column, and 2 × 3 box with 1–6; the dashed cages must add to their tiny sums, without repeated digits.
Make a little discovery ↗
WORLD Nº 039NEW · CURIOSITY CLUBInequality Garden
Ivy grows a 5 × 5 Latin garden. Put 1–5 once in every row and column, and follow each inequality: its pointed end faces the smaller number. Each inequality is a little clue.
Make a little discovery ↗
WORLD Nº 040NEW · CURIOSITY CLUBPrime Pair Pavilion
Help Perri pack eight even-number orders with pairs of primes. Keep the card shelves stocked, choose which waiting parcel to serve, and try a fondness for twin primes.
Make a little discovery ↗
WORLD Nº 041NEW · CURIOSITY CLUBPrime Gap Atlas
Join Vale on sixteen real prime landmarks. Stamp three outposts, spend supplies to cross the gaps, and rest along the way. A scenic nudge changes what the conductor values.
Make a little discovery ↗
WORLD Nº 042NEW · CURIOSITY CLUBPolyrhythm Postcards
Turn the offsets of three-, four-, and six-beat loops. Line up with the diamond accents, leave a little air, and record four musical postcards. Hear bells, strings, and a soft bass pulse.
Make a little discovery ↗
WORLD Nº 043NEW · CURIOSITY CLUBChord Quilt
Alto has three little melodies waiting for a home. Stitch a chord beneath each bar, listen to the arrangement, and suggest warmth or a brighter ending.
Make a little discovery ↗
WORLD Nº 044NEW · CURIOSITY CLUBSquare Patchwork
Help Patch fill a 6 × 6 quilt with square tiles. Pick a top-left square and a 1 × 1, 2 × 2, or 3 × 3 patch. Keep enough room for the pieces still in the basket; undo lets you try again.
Make a little discovery ↗
WORLD Nº 045NEW · CURIOSITY CLUBIndex Isles
Sail with Ada through islands arranged in growing square shells. Decode four square-and-XOR letter addresses, row or glide toward them, and stop at a dock for supplies. The address book explains every code.
Make a little discovery ↗Curious worlds. Little minds.
Run a corner shop, follow the prime rails, solve a little Sudoku, or make a woodland duet. Play yourself, watch a trained character, and offer a gentle nudge. Meet Wisp in Ribbon Garden, and peek inside any of these little brains.
WORLD Nº 037NEW · MEET WISPRibbon Garden
A little light with room to grow. Help Wisp gather seven seed pods, follow its changing route, and discover how a memory of past turns shapes its next move.
Follow a little light ↗
WORLD Nº 029NEW · THE ACADEMYCorner Crew
Jun, Bea, and Kit are opening the corner shop together. Help them share the work, fill the shelves, and make room for every neighbor.
Begin a little adventure ↗
WORLD Nº 030NEW · THE ACADEMYSudoku Lanterns
Keep Suki company as a quiet grid becomes a pattern of lanterns. Solve it yourself, ask for a gentle hint, or watch every deduction unfold.
Begin a little adventure ↗
WORLD Nº 031NEW · THE ACADEMYPrime Rail Express
Conductor Ro is running a railway through the prime numbers. Your rails and ruler patterns set the rhythm; a trained dispatcher keeps the junction moving.
Begin a little adventure ↗
WORLD Nº 032NEW · THE ACADEMYLantern Tactics
Meet Fenn at a tiny lantern board. Build a line of three, interrupt a rival plan, and watch a trained player look beyond the next square.
Begin a little adventure ↗
WORLD Nº 033NEW · THE ACADEMYStormpost Squadron
Wren, Pico, and Sol carry twelve letters between four islands. Choose their priorities, make a little weather, and watch the team find its way.
Begin a little adventure ↗
WORLD Nº 034NEW · THE ACADEMYClockwork Conservatory
Fern has inherited a mechanical garden with beautifully tangled connections. One gear changes several beds. Help all nine flowers bloom together.
Begin a little adventure ↗
WORLD Nº 035NEW · THE ACADEMYEcho Grove
The Moss Choir is listening. Tap an eight-beat call, suggest a mood, and hear three woodland musicians choose a phrase to answer you.
Begin a little adventure ↗
WORLD Nº 036NEW · THE ACADEMYBurrow Survey
Tansy is mapping a meadow of hidden burrows. Read the numbered clues, mark unstable patches, and decide where a little curiosity is worth the risk.
Begin a little adventure ↗Six little lives. A gentle hand from you.
Meet a gardener, a ferry captain, a toy mender, an astronomer, a rescuer, and a baker. Each has a trained mind of their own. Watch, nudge, and see what happens next.
WORLD Nº 023NEW · WATCH & GUIDEMosslight Garden
Pip has a watering can, muddy paws, and a whole garden to tend. Suggest a favorite patch, send a soft shower, and watch a little harvest take shape.
Meet Pip ↗
WORLD Nº 024NEW · WATCH & GUIDEFirefly Ferry
Nori keeps a lantern lit for everyone crossing the lake. Suggest a stop, invite a few passengers, and find a gentle rhythm between the islands.
Meet Nori ↗
WORLD Nº 025NEW · WATCH & GUIDELittle Lantern Works
A music box, a moon rover, and a paper bird are waiting for Bolt. Leave a parcel of parts, choose a favorite toy, and watch this tiny workshop hum.
Meet Bolt ↗
WORLD Nº 026NEW · WATCH & GUIDEStarlight Observatory
Luma is making a map of the night. Point out a favorite constellation, part the clouds, and watch a careful little astronomer collect the stars.
Meet Luma ↗
WORLD Nº 027NEW · WATCH & GUIDETidepool Rescue
Coral is checking on six tiny tidepool friends. Suggest a pool, send a welcome splash, and help a determined little crab bring everyone to the safe shore.
Meet Coral ↗
WORLD Nº 028NEW · WATCH & GUIDECloudline Bakery
Mallow’s kitchen is floating into a new morning. Suggest a favorite treat, deliver a flour parcel, and watch six little orders turn into something sweet.
Meet Mallow ↗Big little games. Right in your hand.
Meet Miso, explore four pocket adventures, and play Wiliam Rocha’s Corner Rush. Touch controls, tiny soundtracks, and room for one more round.
WORLD Nº 022NEW · A LEARNED LITTLE LIFEMiso’s Meadow
A tiny creature with a newly trained mind of its own. Make a little weather, plant a little curiosity, and help Miso collect four happy memories.
Meet Miso ↗
WORLD Nº 005NEW · POCKET PLAYNeon Noodles
The tickets keep coming. Toss together the right bowl, feed the late-night crowd, and keep your little noodle bar glowing.
Open the noodle bar ↗
WORLD Nº 006NEW · POCKET PLAYOrbit Breaker
A pocket-sized trip through the asteroid arcade. Bend your shots, break the bright blocks, and keep one tiny star in flight.
Catch a falling star ↗
WORLD Nº 007NEW · POCKET PLAYSwitchyard
Leaf, star, or moon? Change the junction before each little train arrives. Three destinations. One increasingly busy station.
Take the night shift ↗
WORLD Nº 008NEW · POCKET PLAYSky Stack
Catch a floor as it floats past. Find the rhythm, stack a sunset skyscraper, and save a little focus for the tricky bits.
Build above the clouds ↗
WORLD Nº 009ARCADE EDITIONCorner Rush
Your corner store has joined the arcade. Serve the queue, refill the shelves, and work a seeded shift to a new after-hours soundtrack.
Step behind the counter ↗THE FIRST LITTLE WORLDS
Stay a little longer.
WORLD Nº 001The Humming Atlas
Every place has a song. Wake the cottages, wander the hills, and send a friend a firefly that remembers your walk.
Find your song ↗
WORLD Nº 002The Lantern Post
Five letters. A firefly-powered airship. Carry a little good news across the floating isles, or let your trained copilot take the night shift.
Take to the sky ↗
WORLD Nº 003FRESHLY GROWNMoonpond
The pond sings. The lily pads glow. Play its melody back, one little ripple at a time. How much can you remember?
Meet the moon choir ↗
WORLD Nº 004FRESHLY GROWNXORchard
Every lantern is a switch. Every switch has a pattern. Untangle the connections and help the whole orchard glow.
Grow a little light ↗TWELVE MORE WORLDS · NOW UNDER ONE ROOF
The night shift just got bigger.
WORLD Nº 010FRESHLY GROWNThe Odometer
Sixty-four beats light sixty-four fuses. The long ones are where a binary counter carries. Tap those, and feel the ladder coming.
Start the count ↗
WORLD Nº 011FRESHLY GROWNThe Honest Tavern
Two dice against the house, under a sealed secret. When the night ends, the secret is yours and every roll recomputes.
Sit down ↗
WORLD Nº 012FRESHLY GROWNRuler Road
Towns stand where the ruler says. Name the next hall, count the cottages, find the biggest town, all before the road is built.
Start the survey ↗
WORLD Nº 013FRESHLY GROWNPaper Boats
Four boats on an indexed river. Position is a lookup in time, so rewind, replay, and read a photo finish that is exact.
To the river ↗
WORLD Nº 014FRESHLY GROWNSixteen Skies
On these planets the weather is a proven cycle. Watch the clouds go by, then call rain or shine for the next six hours.
Open the almanac ↗
WORLD Nº 015FRESHLY GROWNRoot Cellar
Take the root, XOR the mask, take the root again. Four doors from the same square family. Which one goes deepest?
Down we go ↗
WORLD Nº 016FRESHLY GROWNSummit Post
Three letters for the three highest peaks on a parallel of the epic planet. A firefly airship, with a trained copilot ready to help.
Take to the sky ↗
WORLD Nº 017FRESHLY GROWNMod 8 Derby
Primes pull a rope: 1,3 mod 8 one way, 5,7 the other. Bet on each lap of twenty-four. One side usually wins, and there is a reason.
To the rail ↗
WORLD Nº 018FRESHLY GROWNAlmanac Café
Customers order by the hour's weather, and the weather is a proven cycle. Read the strip, brew ahead, have the soup on before the rain.
Open the café ↗
WORLD Nº 019FRESHLY GROWNMilestone Post
Parcels arrive addressed to milestones. The right cart is the settlement rank of the milestone. Count the trailing zeros and sort fast.
Start sorting ↗
WORLD Nº 020FRESHLY GROWNDockmaster
Boats are droplets on an indexed river and arrive exactly when it says. Big streams want big service lists. A confluence is a rush hour.
Open the dock ↗
WORLD Nº 021FRESHLY GROWNClockwork Grill
Customers arrive on a triangular XOR clock, so the rush repeats exactly. Cook to order, don't let it burn, learn the beat.
Fire it up ↗There’s always another world growing.
leave a little room for wonder ↗More curious little games are on their way. This is just the beginning.
A FEW NUMBERS. A LOT OF POSSIBILITY.
Made of math.
Meant for play.
Range Arcade is Lars Rocha’s growing collection of small, handmade browser games, built with nedgelaw / RangeBlends and pytoolz and an unreasonable amount of curiosity.
Words become worlds. Numbers become landscapes, flight paths, and melodies. Every game is a different way to see what happens next.
↗ Play in your browser♫ Sound worth switching on♡ No account needed