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function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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tzador

function u(t) {

c.width|=0
for(i=0;i<29;i++)for(j=0;j<19;j++){
V=t+i**7+j**3
x.beginPath()
x.arc(i*99,j*99,42*S(V)**2*0.8+9,0,6.18)
x.fill()
}

Sep 11 2026 11:54 PM UTC

}// 126/140

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Blanks

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Xen

remix of d/36230 by u/rodrigo.siqueira

function u(t) {

for(i=w=c.width|=f=()=>x.getImageData(0,0,w,w);i--;x.fillRect(i,0,S((C(t-i/w*7)+T(t/4)*C(i/w^t))**2),5));x.n=f(x.putImageData(x.n||f(),0,6))

Sep 10 2026 2:18 PM UTC

}// 140/140

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quick play

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Axioplase

remix of d/36265 by u/Axioplase

function u(t) {

w=c.width=3e2;for(j=0;j<(h=500);j++)for(i=w;i--;)x.fillRect(i,j,d=u[j*w+i]=j?u[(j-1)*w+i]^u[(j-1)*w+(i+1)%w]:((t/99+99*S(i)**2)%1.2)|0,d)

Sep 9 2026 1:40 PM UTC

}// 137/140

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Flipping bits

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taupelink

remix of d/35927 by u/taupelink

function u(t) {

eval(unescape(escape`景爨洽琿〺㉥㐻洭ⴻ硛津㜳㼧晩汬✺❳瑲潫攧崨⤩椽洦㌸㐬砮扥杩湐慴栨砮晩汬却祬攽恨獬⠤笴㔭㈪⨨津㐩紬⑻椯㐫㥽┬⑻津㌷⬶ぽ┬⑻洯ㅥ㑽怩ⱸ孭┳㼧慲挧㨧牥捴❝⡭⨪㌥㈲〷Ɑ⩭┱㈸ㄭ椬椬椬椫㌩`.replace(/u([^D].)/g,'$1%')))

Sep 7 2026 7:49 AM UTC

}// 140/140

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d/36257

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rodrigo.siqueira

remix of d/36390 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(i=13000;i--;x.fillRect(960-C(K=T(i/t/9)/a*1.5-2/a)*740*a,540+S(K)*630*a,t<3,.1))a=i*i/t%2-2

Oct 1 2026 8:37 PM UTC

}// 120/140

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Moon Fog

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UEZ

remix of d/36331 by u/rodrigo.siqueira

function u(t) {

eval(unescape(escape`景爨椽㙥㐻椭ⴻ砮晩汬剥捴⡩┳㈰⨶Ⱪ⼳㈰⨶ⰶⰷ⤩愽椥㌲〯㌰ⴳ⸷Ɫ㵩⼹攳ⴵⱸ⹦楬汓瑹汥㵒⡤㴹⼨㈫匨愪愭截戭琪㤩⩓⠲⩡⩢⤯㌫戭匨愩⩔⡢⤪⠱ⵓ⡴⤪⨴〩⤪⨲Ɽ⼴⤍ਠ`.replace(/u([^D].)/g,'$1%')))

Sep 30 2026 7:51 PM UTC

}// 128/140

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Something is watching you...

u/cantelope

#blink

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Axioplase

remix of d/36387 by u/Axioplase

function u(t) {

eval(unescape(escape`󮌮󩬽󮌮󩭩󫍬󤭥󨽴󒭦󫽲󚍪󟜲󝜻󪬭󛜻󚝦󫽲󚍩󟜴󜌻󪜭󛜻󚝢󟜹󞜬󨜽󜜫󤼨󭌪󞜫󪜪󪬩󛍸󛭦󪝬󫍓󭍹󫍥󟜨󪜫󪬩󙜲󟽒󚌰󚜺󤬨󨬪󨜬󜜵󜌪󨜬󜬵󝜪󨜩󛍸󛭦󚍩󚬹󞜭󝜰󛍪󚭢󛍢󛌵󚜬󮌮󩬨󪜪󨬬󪬪󨬭󝜰󛌵󛍢󚜻`.replace(/u../g,'')))

Sep 29 2026 7:22 PM UTC

}// 117/140

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Chilly blinking neon lights

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Xen

remix of d/36348 by u/Axioplase

function u(t) {

for(x.beginPath(z=i=500);i--;x.arc(z+i*C(i^t*i),z+i*S(t^i),i/z,-t,t))x.fillStyle=`hsl(${frame**9%z},90%,50%,.09)`;x.fill()
1/Xen

Sep 29 2026 1:44 PM UTC

}// 128/140

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quick play ;)

u/cantelope

i know a genuine XenQuickPlay® when i see one
u/Xen

*cantelope glances through microscope and bites code edge for clarity then nods*
u/lewdev

Missed an opportunity to add your user name as the in-code signature u/Xen which also works. 1/Xen works too though.

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PotatoImaginator

remix of d/36328 by u/PotatoImaginator

function u(t) {

with(x){for(c.width|=i=0;i<400;i++)fillStyle=`hsl(0,99%,${100-i/8}%)`,beginPath(fill(arc(1360+400*C(a=i/48+t)-i,140+200*S(2*a)+i,80,0,7)))}

Sep 25 2026 12:33 PM UTC

}// 139/140

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moving #infinity

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dee-gomma

remix of d/36312 by u/Axioplase

function u(t) {

for(t?T=1e3:r=1;T--;x.fillRect(r>>8<<2,(r&255)*4,4,4))r=r/2^(r&1&&73728)

Sep 23 2026 8:21 PM UTC

}// 72/140

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Wolfenstein fizzle - golfed

u/Axioplase

!!!