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Flow2Code
Challenges

Learn step by step, world by world

5 worlds of challenges, each adding a few new blocks and ending with a boss. Pass one to unlock the next. Start free: no account needed for the first few.

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Start: Say Hello
  1. Think
  2. Decide
  3. Repeat
  4. Build
  5. Solve

  1. World 1 · Logic Explorer

    Logic Land

    “Learn to think like a computer”

    Give instructions in order: input, work it out, output

    New: AskNew: TellNew: Create ValueNew: Change Value

    0 of 4

  2. World 2 · Decision Maker

    Decision Castle Pro · first one free

    “Choose your path”

    If this happens, do this; otherwise, do that

    New: DecisionNew: Choose

    0 of 3

  3. World 3 · Loop Master

    Loop City Pro · first one free

    “Master repetition”

    Repeat steps instead of writing them 100 times

    New: RepeatNew: Repeat WhileNew: Count

    0 of 5

  4. World 4 · Code Builder

    Code Factory Pro · first one free

    “Build reusable programs”

    Work with lists of numbers and words

    New: Change a ListNew: For Each

    0 of 3

  5. World 5 · Algorithm Hero

    Algorithm Arena Pro · first one free

    “Become a problem solver”

    Combine everything to solve real problems

    Challenges for this world are coming soon.

Stuck? Every challenge has three hints. The first gives a gentle nudge, and only the last comes close to the answer, so try a little before you peek.