LEARN MOJO · GPU PROGRAMMING

Command the swarm.
Master the GPU.

Board a derelict starship and boot its parallel reactor, one core at a time. Every puzzle teaches a real Mojo GPU kernel: the same code that powers robotics, imaging, and multimodal AI.

Start the mission →View the curriculum

Free · No signup · No paywall · 8 acts playable now 🔥

core_01_map.mojo

PUZZLE 1 · MAP

1# Energize every core: one thread maps to one element
2fn energize(out: UnsafePointer[Float32],
3             inp: UnsafePointer[Float32], size: Int):
4    i = block_dim.x * block_idx.x + thread_idx.x
5    if i < size:
6        out[i] = inp[i] * 2.0    # core online

35GPU puzzles

12ship systems

1,024cores per drill

100%real Mojo kernels

SEE THE SWARM FLY

2,600 drones. One kernel each.

A drone concert over the Hudson, running live in your browser. Watch 2,600 drones fall into Lady Liberty, a bald eagle and a waving flag, scored to Sousa. Then switch to orchestrate mode and write the kernel that places every drone in the finale.

▶ Watch the concert Orchestrate the finale

DRONE CONCERT · HUDSON RIVEROPEN THE SHOW →

BUILD YOUR FLEET

Bring the ship online, system by system

Each system is an Act. Clear its puzzles to power it up and earn a Core Shard, the module that unlocks the next system. The full Mojo GPU Puzzles course, retold as a campaign.

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ACT I · P1–8