Linux · networking · docker · kubernetes
Technical skill,
played like a game you can't put down.
Chart a living skill map, run real terminal tasks, level up with XP and streaks, and clear field labs peer-reviewed by other operators. Your first quest is free — no card, no catch.
62
Skills to master
490
Hands-on quests
97h+
Of real content
Hearts regenerate fast·Loot & rewards on every quest·Never pay-to-win
See a quest, start to finish
quest — networking / subnetting
4/5 8
Lesson
Carving a /26 out of a /24
A /26 mask gives you 4 subnets of 62 usable hosts each. You'll assign one to a gateway interface next.
Chart your own path
A skill map, not a syllabus
Your path, drawn as you clear it
Terminal task
$ ip addr add 10.20.4.65/26 dev eth1
[check] gateway assigned — stage cleared
62 usable hosts
30 usable hosts
Learn by doing
Real commands, not just multiple choice
Every quest pairs a short lesson with a quiz and a live terminal check. You don't just recognize the right answer — you type it, and a real validator checks your work.
Better with people
Guilds, duels, parties, mentors
Run a quest live with friends and watch each other's terminals in real time. Join a guild for weekly raids, challenge someone to a ranked duel, or call a mentor the moment you're stuck.
Party · live
KR
Done
YOU
Step 3
RV
Quiz
The full map
Nine branches, one connected tree
Everything unlocks from the same common core — no dead ends, no guessing what to learn next.
Fundamentals
Linux Systems
Networking
Cybersecurity
Databases & Data
Windows & Active Directory
Storage
Artificial Intelligence
Development
Cloud & Platform
+ 15 optional expert-track dives across every branch
Your first quest is free. Right now.
No card required to start. See how far the map goes before you decide on anything.
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