Think like the attacker.
Learn to spot them.
A pixel-art training range where you play the scammer so you can recognize one. Build the lure piece by piece, watch a simplified version of our own detector take it apart, and learn the tell. Thirty operations, six weapons from a real drawn bow to a wizard's staff with three castable spells, staff who quiz you on your own weak spots, three caves and three stranger realms, a workbench, a leaderboard. Nothing to install; nothing stored unless you ask.
▶ PLAY RED CELLfree · no account · keyboard and mouse
Thirty ops, six acts
From the anatomy of a lure, through spoofing, lookalike domains and attachment tricks, to OAuth consent theft and the long con. Each ends with the defender's takeaway: the tell that would have caught it. An in-game guide tells you exactly what's next, so you're never lost.
They talk first, then quiz you on their own specialty. Get it right, get stronger.
Fifteen range staff, each with their own voice (and a few bad jokes), ask when you're ready, never before. More than six hundred reviewed questions across email, accounts, web, fraud, records, cloud, detection and incident response, some of them real evidence where you tap the line that gives it away. Right answers heal you, raise your rank, and every three make you hit harder. The Old Analyst in the hidden grove only asks the hard ones.
Five biomes, named adversaries
Dark forest, autumn grove, highlands, marsh, lakeshore. Bots, Phishers, Trojans, Typosquatters, Credential Crabs — and bosses with the kind of names threat-intel gives them, each with a second wind that gets meaner once you've hurt it badly enough.
Six realms, eighteen artifacts
Three caves, then the Sunken Archive (watch your air), the Frozen Relay (ice and blizzard) and the Dead Datacenter (the lights go out). Each guards three artifacts that change how you play. Craft at the Workbench, fish the lake, survive Botnet Night, and crack open hidden caches for real loot.
Progress lives in your browser. Join the leaderboard with a call sign if you like — email optional, deletable any time, kept on a small separate game server that holds nothing else.
SENTINEL is a simplified model of Family Sentinel's detector, built to teach the rules rather than reveal a bypass.
Foliage, loot, effects and sounds use CC0 art by pixel-boy (Ninja Adventure) and 0x72 (DungeonTileset II); the hero and the range staff are built on Seliel the Shaper's Mana Seed Character Base (free demo, used with its permission for commercial use, plus purchased Bow Combat, Spear Combat and Forester Hat & Tunic packs for the real bow and spear animations); the Dead Datacenter's hardware is from MarcoPG's Sci-Fi Starter Pack. Every enemy and boss keeps its Red Cell name and behavior and borrows a Ninja Adventure body. Thank you all. The buildings and the range are our own.
Knowing the tells is not the same as being watched.
Nobody is sharp at 7 a.m., or in a hospital waiting room, or on the day of a funeral — and that is precisely when these arrive. We watch the inbox continuously so nobody has to be perfect. First month free.
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