account
challenge
contact
credit
hacker
links
stat
todo
wtf

Top Hackers
alucardo 354 points 100.00%
saiwa 354 points 100.00%
thefinder 354 points 100.00%
Anonr 350 points 98.87%
neoxquick 344 points 97.18%
tehron 335 points 94.63%
livinskull 330 points 93.22%
Akorlith 325 points 91.81%
madbat2 320 points 90.40%
rubiya 319 points 90.11%

New Hackers
BackMoon : What's that say? III
DrAMA : A curious escape
t0mcr00se : A curious escape
zeldarfleau : A curious escape
0verr1de : What's that say? V
ozpingux : A curious escape

Partner Sites
Halls of Valhalla
Additional Challenge Sites
wargame.kr with 42 challenges.
SuNiNaTaS with 32 challenges.
W3Challs with 94 challenges.
Hacking-Challenges with 145 challenges.
Mod-X with 9 challenges.
Updated on 12/10/19 7:15:22 PM UTC
It's only a game!

Research harder

JSON and the Argonauts III

This one is sorta different. You've got 1 second. Good luck! :-)

I'm ready


And the answer is?







Who's beaten this one?
Pseudo
  Pass

There are currently 90 challenges, with a maximum possible value of 354 points.

New Challenges
Rumplestiltskin
Unusual Translation
Hashed II
Beep Beep
JSON and the Argonauts III
JSON and the Argonauts II
JSON and the Argonauts I

Most Popular Challenges
What's that say? I
A curious escape
Computer Talk
Base 8^2
What's that say? III
I came, I saw, I encrypted
What goes there?

Member of The Internet Defense League

Care and feeding instructions