Explore the catalog
54 modules
Across 8 programming languages
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A solo challenge or a shared adventure. Pick your next battle and put your knowledge to work.
Create Lobby
Open a shared quiz room for classmates or a study group.
Join Public Rooms
Find active multiplayer raids and group assignments.
Solo Boss Raid
Practice a specific module boss before taking it multiplayer.
Quick Practice
Challenge Loop Wraith with a focused round on loops and iteration.
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Recommended Battles
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- javascriptBeginner
Orryx, the Index Leviathan
An armored leviathan guards the indexed depths. His coiled body braces for a jaw-fired torrent that becomes a scarlet storm in his second phase.
12m - javascriptBeginner
The Ouroboros Bellkeeper
A skeletal ring guardian tolls every repeated step. Master loop conditions and control flow before his bell releases its furious returning echoes.
12m - javascriptIntermediate
The Pendulum Widow
A mourning clock spirit suspends every promise. Resolve asynchronous flow before her weighted tentacles release their delayed and converging strikes.
12m - pythonIntermediate
The Prototype Armadillo
A walking shell fortress drives its piston fists through the arena. Understand Python classes and instances before its armor awakens.
12m
54 modules found
Quiz catalog
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