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 to start · No signup for Lesson 1 · 35 puzzles 🔥

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
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.

⚡
ACT I · P1–8

Cold Boot

Wake the reactor. Energize cores, form squads, give them shared comms.

map · zip · guards · blocks
Start →
🛠️
ACT II · P9–10

Diagnostics Bay

Subsystems misfire. Trace bugs and contain a memory breach.

debugger · sanitizers · races
🔒 Finish Act I to unlock
📡
ACT III · P11–16

Systems Online

Build sensors, targeting and navigation from real GPU algorithms.

convolution · scan · matmul
🔒 Finish Act II to unlock
🤖
ACT IV–V · P17–22

Bridge & Fleet

Expose kernels to Python; teach the swarm to learn.

MAX ops · attention · autograd
🔒 Finish Act III to unlock
THE AETHER FLEET AWAITS

Your reactor is dark. Light it up.

Write your first GPU kernel in the next 60 seconds, right in the browser.

Start the mission  →