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    8 editions·110 challenges·2019–2026

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    20262025202420232022202120202019
    Average—/5Vote and rate each challenge below.

    2026

    22 challengesCTFtime

    crypto3

    Fortune_Teller
    Oblivious_Error
    Smooth_Criminal

    forensic7

    Cold_Workspace
    Half_Awake
    Landfall
    Last_Byte_Standing
    Sherlockk
    Silent_Archive
    Watson

    misc9

    Breadcrumbs
    Double_Check
    Hidden_in_Plain_Sight
    Insanity_Check_Hat_Trick_Denied
    Jail_Break
    QRecreate
    W3W1
    W3W2
    W3W3

    pwn2

    Hour_of_Joy
    Rude_Guard

    web1

    Time_to_Pretend

    2025

    18 challengesCTFtime

    crypto4

    Autokey_Cipher
    DCA
    Espathra_Csatu_Banette
    RSA

    forensic3

    Finally_an_un_strings_able_problem
    Forgotten_Footprints
    Streamified

    osint3

    Three_Words_1
    Three_Words_2
    Three_Words_3

    pwn4

    E_Corp_Part_2
    RETirement_Plan
    secbof
    Tic_Tac_Toe

    rev4

    Maps
    Ostrich_Algorithm
    Retro_Cookie_Clicker
    Safe_Word

    2024

    15 challengesCTFtime

    crypto5

    bits_and_pieces
    Cryptordle
    Forgery
    numbers_go_brrr
    RSA_256

    forensic2

    Contracts
    Gibberish

    pwn1

    E_Corp

    rev5

    Accelerated_Hell
    Beginner_Basic_Reversing_Problem
    Fruit_Deals
    In_The_Dark
    PES_128

    web2

    Easy_Mergers_v0.1
    Unsound

    2023

    13 challengesCTFtime

    crypto4

    Affinity
    LooksWrongtomE
    ProvablyInsecure
    ReallyLooksWrongtomE

    pwn3

    BingChilling
    Printfail
    Sandbox

    rev5

    AdventureROM5
    Game
    LooksCorrecttoMe
    ReadingList
    Welcome

    web1

    UnmarkedKey

    2022

    10 challengesCTFtime

    crypto4

    FailedHashFunction
    Forky
    Scrambled
    Sunset

    net1

    MalformedQuery

    pwn2

    Bloat
    SmolOverflow

    rev2

    AdventureROM4
    EbookDRM

    web1

    Sigma

    2021

    21 challengesCTFtime

    crypto8

    ABitWeird
    CipherGauntlet
    IllegalPrime
    Matrices
    SizzlingBacon
    Sleeves
    SmallPProblems
    VariousVernacular

    pwn6

    2Smol
    FunctionalProgramming
    LinkerMachineBroke
    MessyUTF-8
    Monke
    Resolve

    rev7

    AdventureROMPart3
    Algorithm
    File.tetr
    PeebPoob
    Recur
    Run-ELF
    StringyThings

    2020

    6 challengesCTFtime

    misc6

    bof
    cancelled
    dns
    sgx-flag-vault
    SimplicioJail
    zurk

    2019

    5 challengesCTFtime

    misc5

    babyecho
    BabyPwn
    EncryptionService
    Jendy
    PPowerenCryption
    CTF Archivessource