Brass helmet on. Down the shipwreck coast, wreck by wreck, into the dark. Watch your air.
Choose a bonus
The deep is clear. Keep diving into endless tiers, or surface with your earnings.
Get both attacks to Lv.3 in a run. The fusion then always shows up as a choice. It takes one slot and replaces both.
Moving. Drag anywhere (or WASD). Your attacks fire by themselves.
Tiers. Kills fill the tier bar. Clear a tier and pick a bonus. Each tier is deeper and darker. Bosses (tiers 5, 10, 15...) must die before you move on. After 60 s with a boss, the dark closes in.
Attacks. 6 slots, levels 1 to 5. Each level-up card lists exactly what that level adds (more damage, plus things like extra harpoons, pierce or a bigger area).
Fusions. Some attack pairs fuse when both are strong enough. You have to find them. A fusion takes one slot and replaces both.
Marked creatures (a cyan ring, from a sonar ping or a lamp) take +50% damage from everything.
Ink. From tier 2, ink sacs sink near you every few seconds (a red dashed circle shows where, 1.5 s before). Ink squids leave a cloud when they die. Bosses and elite rays drop ink too.
AIR. In ink your air drains about 20 per second. In clean water it comes back 3 per second down to tier 10, 2 per second to tier 20, and only 1.5 per second deeper.
No air. At 0 you lose 7% of your max HP every second you stay in ink. Swim out!
Air hoses. Every 16 s the ship lowers an air hose near you for 9 s (a bubble column marked AIR). Inside it your air refills 30 per second, even in ink.
Air Saver slows the drain: at 80% (the max) it is about 10 per second.
Air bubbles (dropped by kills) refill half your air. Med kits heal a quarter of your HP. Bubble Net gives a breath of air each cast.
Light burns ink away: flares and burning floor, lamp beams and the magnesium flash. Your own nettle clouds are violet and never hurt you.
The dark closes in. After 60 s against a boss the whole floor counts as ink, and it gets worse every second. Kill bosses quickly.
Ordinary creatures only hurt you by touch. Only bosses and elites (purple-ringed) spit or throw things.
Items. Purple-ringed creatures carry an item. You find out what it is when it drops.
On screen. Each creature shows its HP and its damage per hit (before your DEF). Your stats are bottom left; pause for the full list.
HP is your life. At 0 you sink and the dive ends.
ATK is the base damage of every attack. Each attack hits for ATK x its own power x its level.
DEF softens hits: you take hit x hit / (hit + DEF). DEF equal to the hit halves it. Every hit still takes at least 2% of your max HP.
LCK makes rarer bonus cards and more air bubbles and med kits. It never changes item drops.
DPS is your damage per second over the last 5 seconds. Pause shows it per attack.
Crit is the chance a hit crits (5% to start, max 100%). Crit DMG is how hard: 150% to start.
Atk Speed makes attacks fire more often: +100% = twice as often (max +400%).
Size makes blasts, auras and clouds bigger. Projectile adds shots or blades to most attacks (max +10).
Duration makes clouds, turrets and other lasting things last longer.
Resist cuts damage again after DEF (max 80%).
Regen heals that much HP each second. Lifesteal heals a share of the damage you deal (max 20%, and at most 2% of max HP per hit).
Move is your speed (max +150%).
Air is how much air your helmet holds. Air Saver makes it drain slower in ink (max 80%).
XP, Pearls, Salvage give more of each.
Loot raises every item's drop chance (Loot +100% = twice as likely).
Pearls come from clearing tiers and bosses. They buy upgrades in the DIVING MANUAL. Spend half of a page to open the next. Every 4th page is a supplies page with big flat stats.
Salvage comes from kills. It buys gear in the SALVAGE SHOP. Gear never changes.
KIT. Wear a Helmet (stats every run level), Arms, Suit and Kit items.
Orders from the ship are one-time goals with rewards. Salvage pay earns pearls while you are away. Crush Depth (after beating tier 30) is a much harder dive for much more pay.