Twenty games. One leaderboard. Filter by what you want to train.
Pick the right Linux command for the task before time runs out. Straight out of the Linux+ class content.
🔒 Paid 🔧 LinuxBuild the right shell pipeline by clicking command segments in order. Wrong order resets the build and costs a life.
🔒 Paid 🔑 LinuxToggle an rwx grid to match real chmod scenarios — SSH keys, shared files, web roots. Not just octal trivia.
Free 🧮 NetworkingSubnet math under pressure — network/broadcast addresses, usable hosts, CIDR conversions. Pulled from Networking+.
🔒 Paid 🧩 NetworkingFlip cards to pair every port number with its service. A memory game, not a quiz — SSH, HTTPS, DNS and more.
🔒 Paid 🗺 NetworkingRead a router's routing table, work out the longest prefix match, then click the correct next hop on the map.
🔒 Paid 🕵 NetworkingRead real DNS records and dig output, then call what's actually happening. Record types, TTLs, zone transfers.
🔒 Paid 🔐 SecurityDecode Caesar-shifted transmissions before the countdown runs out. Three lives, no mercy after round two.
🔒 Paid 🛰 SecurityIntruders blip across a 5×5 grid. Click them down before they reach the wire. 60 seconds, ramping speed.
Free 🎣 SecuritySpot the scam before it spots you — suspicious links, spoofed domains, BEC fraud, and more.
🔒 Paid 🔒 SecurityCredential stuffing, salting, brute force — harden your defenses before the clock runs out.
🔒 Paid 🦠 SecurityFlip cards to pair every malware type with its defining behavior. Ransomware, rootkits, and more.
🔒 Paid 🧱 SecurityRead a firewall ACL top-down and call the outcome. Rule order, default-deny, and least privilege.
Free ⌨️ MicrosoftKnow your keys before the clock runs out — Win+L, Ctrl+Shift+Esc, and everything in between.
🔒 Paid 🖥️ MicrosoftBuild the right PowerShell pipeline, one cmdlet at a time. Wrong order costs a life.
🔒 Paid 🗂️ MicrosoftKnow where things live in Windows and Active Directory — OUs, GPOs, DNS, and DHCP.
Free 🐍 ProgrammingWhat does this code actually print? Order of operations, slicing, types, and more.
🔒 Paid ☕ ProgrammingWhat does this code actually print? Integer division, references, inheritance, and more.
Free 🃏 HardwareReal Klondike rules, a PC-building deck. Learn what each part does as you play.
Free 🖥️ Hardware2048, built out of PC parts. Slide to merge components — transistor to capacitor to RAM, all the way up to a full gaming rig.
🔒 Paid 🏂 NetworkingDodge network hazards on the way down. Checkpoints explain each hop your connection takes.
🔒 Paid 📦 SecurityRoot a box, terminal-style — recon, exploitation, and privilege escalation calls under the clock.
🔒 Paid 🛡️ SecurityA wave-based security brawler. Defend the Core against malware, DDoS floods, and exploits — each threat needs a different counter.
🔒 Paid 🎩 LinuxRHEL-specific calls — dnf/rpm, subscription-manager, SELinux, firewalld.
🔒 Paid 🐧 Linuxapt/dpkg, ufw, netplan — the Debian-family calls you'll actually make.
🔒 Paid 🅰️ Linuxpacman, the AUR, and the rolling-release rules that keep a system alive.