Halloween at the Portal. The Hollow, a haunted cipher maze, is free to play until 2 November. Enter The Hollow

4 stages · Hard · Premium

THE NEON AQUARIUM

📜 Briefing
The Meridian Aquarium closed years ago, but its tanks still glow. Someone filled them with coolant and sank rows of servers into the deep, and the old building now hums with a secret network. You were sent a single line: the keeper left a trail inside, and the trail is the only way to reach what the servers hold.

The power is unreliable and the pumps are failing. Each hall holds one message the keeper hid for whoever came next. Read them in order, keep moving, and do not trust the quiet.
  1. 1 Ticket Hall Screen
  2. 2 Jellyfish Hall Tablet 🔒 opens with stage 1's answer
  3. 3 Tunnel Plaque 🔒 opens with stage 2's answer
  4. 4 Control Room Terminal 🔒 opens with stage 3's answer

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