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Think fast. Play smart.

Two5 - Give your brain a run.

Short brain games and logic challenges that put your problem-solving skills to the test. Solve a round, build your score, and come back for more.

Explore TWO5

Made for curious minds

Numbers · Logic · Computer Science

How Two5 works

Pick a challenge. Make your move.

  1. TWO5Preview

    Choose an arena

    What are you in the mood for?

    Mathematics↗
    Computer Science→
    Knowledge & Reasoning→

    Pick a subject. Start thinking.

    01

    Choose an arena · Start here

    Pick what you want to test.

    Start with Mathematics, Computer Science, or Knowledge & Reasoning. Each arena is built around questions that test how you think—not long lessons or endless scrolling.

  2. TWO5Preview

    Mathematics · Challenge 04

    Find the next number

    261220?

    28303242

    02

    Take the challenge · Play

    Think it through. Lock in your answer.

    Solve a short, carefully chosen question. Work through a number pattern, reason through a problem, or test your CS knowledge. Every challenge gives you something specific to figure out.

  3. TWO5Preview

    Challenge complete

    Your result

    +12

    Correct answer: 30

    Why?

    The differences increase by 2: +4, +6, +8, then +10.

    Personal best84

    03

    See how you did · Review

    Get the answer. Know your score.

    Review the correct answer and the reasoning behind it. Build your score, track personal bests, and—where ratings are available—see your progress in each subject.

  4. TWO5Planned

    Your progress

    Mathematics · Rating

    Current score

    840

    +8%
    Mathematics840
    Computer ScienceComing soon

    Keep playing. Keep improving.

    04

    Track your standing · More to come

    Improve your best. Compare your skill.

    Use your results to keep improving and compare your performance on subject leaderboards as those features roll out. Daily challenges and friend-versus-friend rounds are planned next.

Pick a game.

Numbers and Logic are open.
Computer science, a daily problem, and a challenge you can send are on the way.

Double-click to reset
Drag to explore

Open

Numbers

Find the pattern. Work out the sequence. Trust your reasoning.

From number sequences and mental calculations to mathematical thinking and problems that reward a different way of looking at numbers.

Status

Open

Play

Sequences

Round

01

Explore Numbers

Before you play

Good questions.

Two5 is a game of short challenges. Start with Numbers and Logic, get a score, and try to beat it. More rounds show up as we open them.

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