Dave the Diver中文Oxygen and depth management
Oxygen is the core survival resource. Plan dives around depth milestones, surface before oxygen becomes a gamble, and upgrade the tank in a deliberate order.
- Surface when oxygen hits 30% — below that, the return trip becomes a gamble.
- Upgrade the oxygen tank before the suit; deeper zones are gated by oxygen, not suit pressure.
- Use air pockets and tanks in deep zones as planned checkpoints, not as bailouts.

News & Guides
Oxygen upgrade order
Upgrade oxygen tank tier 1 as soon as you can afford it, then return to it after every chapter. Tier 2 unlocks the 200m zone, tier 3 unlocks the 250m zone, and tier 4 supports the Glacial Passage and beyond.
- Tier 1: affordable early
- Tier 2: unlocks 200m
- Tier 3-4: Glacial Passage and deeper

News & Guides
Depth milestones and surface rules
Plan dives around depth milestones: 50m, 130m, 200m, 250m. Each milestone unlocks new fish and materials but requires the next oxygen tier. Surface at 30% oxygen to keep the return trip safe.
- Milestones: 50m, 130m, 200m, 250m
- Each milestone needs next oxygen tier
- Surface at 30% oxygen