Your engineering path

Pick a sector, clear units, earn XP — Unit 1 is free everywhere.

Today's missions

Daily goal 0 / 50 XP

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Unit 1 is your free demo. PRO unlocks every unit.

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Leaderboard

Compete in your weekly league. Top 10 promote; bottom 6 and inactive players demote. Resets every Monday.

Bronze League

Top 10 promote · Bottom 6 demote

    Achievements

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    Unlock badges by practising and hitting milestones.

    Your stats

    Guest 0 XP

    Lifetime

    Progress by sector

    Settings

    Microphone questions Pronounce terms aloud in quizzes. Turn off to skip them entirely.
    Sound effects Ding on correct answers, buzz on misses, fanfare on lesson end.
    Daily goal XP target per day. Completing a lesson keeps your streak; the goal is a bonus target.

    Symbol Library

    Search technical symbols by name, category, or schematic ID.

    Shop

    Power-ups and Voltlingo PRO.

    Secure checkout via Lemon Squeezy.

    Refill Hearts

    Free players do not regain hearts over time. Refill all five hearts with a one-time purchase.

    Streak Freeze

    Miss one day without losing your streak. You can hold up to two freezes. New engineers start with one free freeze.

    400 XP

    Individual PRO

    Personal subscription for solo engineers who want the full curriculum, unlimited hearts, and every unit unlocked.

    • Unlimited hearts — never get locked out
    • Unlock every unit across every sector (pass each unit to open the next)
    • Full curriculum for solo engineers

    $4.99 / month

    Group PRO

    For team leads, trainers, and bosses. Purchase seats, invite members by Google email, and manage your team in the Boss Portal.

    • All Individual PRO perks for every invited member
    • Fixed seat packs — pick the size that fits your team
    • Boss Portal — invites + team activity dashboard
    • Perfect for teams, classrooms, and study groups

    Need more than 200 seats? Contact us