### 1. Core Identity **Elevator Pitch**: Descend into a bioluminescent underwater abyss as a salvage diver, scavenging alien technology to upgrade your suit while surviving increasingly hostile deep-sea creatures. Each dive is a one-way trip until you can afford the ascent. **The One Unique Thing**: Depth-based pressure system - the deeper you go, the stronger the loot but the more your suit degrades. You're constantly balancing greed vs. survival in real-time. **Core Fantasy**: The thrill of deep-sea exploration where every meter deeper is a calculated risk. **Design Pillars**: 1. Risk/Reward Depth - every decision is about how far you push 2. Emergent Builds - no two dives play the same due to procedural affixes 3. Meaningful Loss - death hurts but teaches