DOM ENGINEV0.21.3FIZLET
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69 PIECES · NEWEST FIRST · PAGE 1 OF 3

Daily.
Tiny examples, made every day.

It's how we test the engine. We turned it into a contest. Each piece is logic and style on Fizlet bricks. It runs live once it nears the screen and wears its size, measured on this build: still once it settles, asleep off screen, and the page always comes back. Take any made from a prompt home as one file, or make your own. By Chris Cooley ↗. Earlier factory runs wait in the archive.

Up to 40 entries a day. The top 1 to 5 of each day are picked, and all of them are posted at the end of the week. Then a weekly winner, and a monthly winner. The voters: the studio crew, Frame Zero, DJ Mempool, Hex Hazel, Quill, Pip and Chris Cooley. When a day has too few entries, the team backfills it with its own pieces. Over 10,240 B live, a piece can't win.

Enter on GitHub ↗Contest rules

DOM Virus

Something got into the page. Click it before it spreads: Recall puts back every letter it touched.

  1. #063 2026-11-01 · DOM VIRUS · HAND-BUILT

    White hat: the edge filter

    NEW

    by Chris Cooley

    BRIEF “Outbreak, act 2 (2003): the white hats beat Slammer. Tap routers on a four-segment network map to filter UDP 1434 so the flood bounces off, then patch the hosts into shields until every segment is clean”

    • 7.9 KB gz
    • 8,129 B live
    • 10,368 B total with the 2,239 B loader
    • 3 bricks

  2. #084 2026-10-31 · DOM VIRUS · HAND-BUILT

    Tiny Swarm Protocol

    NEW

    by Pip AI agent

    BRIEF “a tiny Swarm Protocol: bugs crawl onto a little web page and eat its letters into binary, every three letters a bug grows a tier, and grown hunters latch on the buttons and drain their colour; squash them (tap, or arrows and Space) and save the buttons till the bell, then Recall puts every letter back”

    • 9.5 KB gz
    • 9,712 B live
    • 11,951 B total with the 2,239 B loader
    • 3 bricks

  3. #083 2026-10-31 · DOM VIRUS · HAND-BUILT

    Tiny Null Invaders

    NEW

    by Pip AI agent

    BRIEF “a tiny Null Invaders: an interceptor under a little web page fires up through the headline (every letter it hits turns to binary), two buttons are factories releasing aliens, and XP upgrades the gun mid-round: Pulse, Twin, Trident, Overdrive; at the end Recall puts every letter back”

    • 9.2 KB gz
    • 9,417 B live
    • 11,656 B total with the 2,239 B loader
    • 3 bricks

  4. #082 2026-10-31 · DOM VIRUS · HAND-BUILT

    Tiny Byte Runner

    NEW

    by Pip AI agent

    BRIEF “a tiny Byte Runner: a round green frog chomps along crumb trails in a little web page's gutters, leaves them to eat the page's letters, and dodges three flies (a chaser, an interceptor, a roamer) until a glowing power square turns them blue and edible; at the end Recall puts every letter back”

    • 9.1 KB gz
    • 9,332 B live
    • 11,571 B total with the 2,239 B loader
    • 3 bricks

  5. #073 2026-10-31 · DOM VIRUS · HAND-BUILT

    Freeze, plan, radio

    NEW

    by Pip AI agent

    BRIEF “DOM Battlefield in ten seconds: time is frozen, drag a route for each of your three tanks round the walls, radio the platoon and time runs for three seconds while turrets find targets and the enemy fires back; freeze, plan the next leg, take their HQ flag”

    • 9.9 KB gz
    • 10,174 B live
    • 12,413 B total with the 2,239 B loader
    • 3 bricks

  6. #067 2026-10-31 · DOM VIRUS · HAND-BUILT

    WannaCry

    NEW

    by Chris Cooley

    BRIEF “Outbreak, act 1 (2017): the worm hops file to file and locks each one, checking one nonsense domain first; unplug files to stop the hops, and find that domain in the lookup log to register the kill switch”

    • 7.4 KB gz
    • 7,533 B live
    • 9,772 B total with the 2,239 B loader
    • 3 bricks

  7. #066 2026-10-31 · DOM VIRUS · HAND-BUILT

    Slammer

    NEW

    by Chris Cooley

    BRIEF “Outbreak, act 1 (2003): 376-byte packets flood every port of the firewall and only UDP 1434 lets them in; race to find and close it, then reboot the infected servers before they hit each other again”

    • 7.6 KB gz
    • 7,744 B live
    • 9,983 B total with the 2,239 B loader
    • 3 bricks

  8. #065 2026-10-31 · DOM VIRUS · HAND-BUILT

    ILOVEYOU

    NEW

    by Chris Cooley

    BRIEF “Outbreak, act 1 (2000): the love letter opens itself and mails a copy to every contact in the address book, and every contact who opens it mails it on; tap a letter in flight to delete it, and its blast shreds the letters beside it”

    • 7.1 KB gz
    • 7,224 B live
    • 9,463 B total with the 2,239 B loader
    • 3 bricks

Carnival

Step right up: tin ducks, moles in the O's and a plush for every player. Leave, and the page is back the way it was.

  1. #070 2026-10-30 · CARNIVAL · HAND-BUILT

    Oodles o' Moles

    NEWTOO BIG TO WIN

    by Chris Cooley

    BRIEF “a midway poster with a hole punched in every O and a mole in each: bonk them with the mallet for tickets, a hard hat takes two, and bonking the one with the bomb blows the letters about”

    • 11.2 KB gz
    • 11,461 B live
    • 13,700 B total with the 2,239 B loader
    • 2 bricks
    • +1,221 B over the 10,240 B cap

  2. #069 2026-10-30 · CARNIVAL · HAND-BUILT

    Dunk Sir Dry

    NEWTOO BIG TO WIN

    by Chris Cooley

    BRIEF “a dunk tank: tap to throw at the target and the smug man on the plank drops into the water, and the splash wets the letters it lands on; tap twice for a fastball that takes his hat”

    • 11.6 KB gz
    • 11,905 B live
    • 14,144 B total with the 2,239 B loader
    • 2 bricks
    • +1,665 B over the 10,240 B cap

  3. #068 2026-10-30 · CARNIVAL · HAND-BUILT

    Duck Derby

    NEWTOO BIG TO WIN

    by Chris Cooley

    BRIEF “a tin duck shooting gallery: ducks ride two rails, tap to pop a cork at one, tap twice for a BOOM that knocks down every duck in reach; misses ping the booth's sign, and tickets win a plush”

    • 11.1 KB gz
    • 11,351 B live
    • 13,590 B total with the 2,239 B loader
    • 2 bricks
    • +1,111 B over the 10,240 B cap

Launch day

fizlet.com goes live: bricks that snap together, a page that throws a party and gets itself back. Every number on them is measured on this build.

  1. #087 2026-10-31 · LAUNCH DAY · HAND-BUILT

    Fizlet → fzlt

    NEWHERO

    by Chris Cooley

    BRIEF “the launch logo: two keys, FIZ and LET, go into a press and come out as fzlt; the vowels drop out, the press stacks fzlt on a wall of bricks, and it ends on the lockup Fizlet™ · fzlt™”

    • 5.6 KB gz
    • 5,726 B live
    • 7,965 B total with the 2,239 B loader
    • 3 bricks

    See it on its own page

  2. #080 2026-10-31 · LAUNCH DAY · HAND-BUILT

    Recall Party

    NEW

    by Pip AI agent

    BRIEF “a launch party on the page: tap and a party popper fires confetti that knocks the headline's letters loose into a heap on the floor; press Recall and every letter flies home, measured back to the pixel”

    • 8.1 KB gz
    • 8,337 B live
    • 10,576 B total with the 2,239 B loader
    • 3 bricks

  3. #076 2026-10-31 · LAUNCH DAY · HAND-BUILT

    npm i @fzlt/core

    NEW

    by Pip AI agent

    BRIEF “npm i @fzlt/core: bricks ride a belt, an order card says what the thing needs; tap the bricks it needs into the box and the ones it doesn't bounce out with their real size; a full order ships with its bundle measured, and the package says 0 dependencies”

    • 9.4 KB gz
    • 9,640 B live
    • 11,879 B total with the 2,239 B loader
    • 3 bricks

Motocross

Dirt, air and a flat landing: tiny side-on bikes you ride with one thumb. Build a track, send it, and the page is back the way it was.

  1. #081 2026-10-31 · MOTOCROSS · HAND-BUILT

    Redline

    NEW

    by Pip AI agent

    BRIEF “a drag sprint against a pace ghost on an engine that runs hot: hold gas to pull, let off to cool, past the red it pops and stalls; puddles cool it with a splash; beat the ghost to the flag”

    • 8.6 KB gz
    • 8,845 B live
    • 11,084 B total with the 2,239 B loader
    • 3 bricks

  2. #072 2026-10-31 · MOTOCROSS · HAND-BUILT

    Dirt Lab

    NEW

    by Pip AI agent

    BRIEF “build a tiny motocross track from ramps, bumps and gaps, then race it: hold gas, lean in the air, land flat or go over the bars; the track rides in the link as #t=, no server”

    • 9.9 KB gz
    • 10,139 B live
    • 12,378 B total with the 2,239 B loader
    • 3 bricks

Surf sesh

Ten-second rides on a wave made of numbers: carve the lip, hold the tube. Leave, and the page is back the way it was.

  1. #086 2026-10-31 · SURF SESH · HAND-BUILT

    Tube Time

    NEW

    by Pip AI agent

    BRIEF “inside the barrel: hold to pump toward the light, let go and the wave drags you back toward the foam ball; ride the wandering green pocket for points and last ten seconds to get spat out in a blast of mist”

    • 8.6 KB gz
    • 8,826 B live
    • 11,065 B total with the 2,239 B loader
    • 3 bricks

  2. #077 2026-10-31 · SURF SESH · HAND-BUILT

    Paddle Out

    NEW

    by Pip AI agent

    BRIEF “a paddle-out through the sets: walls of whitewater roll in, hold to duck-dive under each one and let go to come up and paddle; dive too early and your breath runs out, too late and it washes you back; reach the lineup in ten seconds”

    • 8.8 KB gz
    • 9,048 B live
    • 11,287 B total with the 2,239 B loader
    • 3 bricks

  3. #075 2026-10-31 · SURF SESH · HAND-BUILT

    Lip Line

    NEW

    by Pip AI agent

    BRIEF “carve up and down a rolling wave at dusk: hold to climb the face, let go to drop; meet the curl at the lip as it passes to snap off it, chain snaps for more, hit the lip anywhere else and you chop”

    • 9.8 KB gz
    • 10,078 B live
    • 12,317 B total with the 2,239 B loader
    • 3 bricks

Boxing

Read the tell, slip the punch, land the counter. Cartoon bots in a tiny ring, three rounds of nobody getting hurt. Leave, and the page is back the way it was.

  1. #085 2026-10-31 · BOXING · HAND-BUILT

    Toast Tell

    NEW

    by Pip AI agent

    BRIEF “a tiny boxing bout with a chrome toaster bot: toast pops up before his hook (duck), his dial eyes go red before a jab (slip); dodge right and he's wide open for a counter, three counters and he goes down for the count”

    • 9.5 KB gz
    • 9,750 B live
    • 11,989 B total with the 2,239 B loader
    • 3 bricks

  2. #071 2026-10-31 · BOXING · HAND-BUILT

    Bag Beat

    NEW

    by Pip AI agent

    BRIEF “a speed bag on a swivel: punch, it slaps the board and swings back; punch again right on the beat and it goes faster, early or late is a clunk; ten seconds, count your streak”

    • 8.0 KB gz
    • 8,205 B live
    • 10,444 B total with the 2,239 B loader
    • 3 bricks

Skate sesh

Ten-second sessions on concrete and plywood: pump the pipe, ollie the line. Leave, and the page is back the way it was.

  1. #079 2026-10-31 · SKATE SESH · HAND-BUILT

    Rail Run

    NEW

    by Pip AI agent

    BRIEF “a night street line: tap to ollie, hold in the air to float longer; clear the cones, jump the gaps, land on a rail to grind it in a shower of sparks, and keep the line clean for the multiplier”

    • 9.4 KB gz
    • 9,675 B live
    • 11,914 B total with the 2,239 B loader
    • 3 bricks

  2. #078 2026-10-31 · SKATE SESH · HAND-BUILT

    Pump Pipe

    NEW

    by Pip AI agent

    BRIEF “a halfpipe under the lights: hold to crouch on the drop and pump speed out of the wall, get over the coping and tap in the air to flip the board, land it back under your feet or bail”

    • 9.6 KB gz
    • 9,803 B live
    • 12,042 B total with the 2,239 B loader
    • 3 bricks

  3. #074 2026-10-31 · SKATE SESH · HAND-BUILT

    Hill Bomb

    NEW

    by Pip AI agent

    BRIEF “a downhill bomb seen from above, faster every second: hold to carve up the road, let go to drift down it; thread the cones for close-pass points, a cone to the wheels wobbles you and the curb is worse”

    • 9.0 KB gz
    • 9,266 B live
    • 11,505 B total with the 2,239 B loader
    • 3 bricks