Sewers is the first level of Remixed Dungeon (depths 1-5). It serves as the tutorial area and introduces basic game mechanics.

Level/Dungeon Branch

Level Generation: SewerLevel.java

• Package: `com.watabou.pixeldungeon.levels`
• Extends: `Level`
• Features: Water pools, grass, rat/snail spawns, hidden doors

Level Transition: Dungeon.java

• Line 308: `switchLevel()` - Level transitions
• Depths 1-5: Sewers
• Depth 5: Boss level (Goo)

Level Generator: LevelGenerator.java

• Sewer-specific room templates
• Water placement algorithm
• Secret door generation

Boss Level: SewerBossLevel.java

• Depth 5
• Goo boss arena
• Special layout

Bestiary Spawns: Bestiary.json

"levels": {
  "1": { "mobs": [{"Rat": 1}, {"Snail": 1}] },
  "2": { "mobs": [{"Rat": 1}, {"Snail": 1}, {"DeepSnail": 0.03}] },
  "3": { "mobs": [{"Rat": 1}, {"Snail": 0.5}, {"Crab": 0.3}, {"DeepSnail": 0.1}] },
  "4": { "mobs": [{"Rat": 0.8}, {"Crab": 0.5}, {"DeepSnail": 0.2}, {"Gnoll": 0.05}] },
  "5": { "mobs": [{"Goo": 1}] } // Boss level
}

Level Objects: `assets/levelObjects/` - Pedestals, statues, wells, barricades, traps

English (values/strings_all.xml):

<string name="Sewers_Title">Sewers</string>
<string name="Sewers_Desc">The ancient sewers beneath the city. Damp, dark, and inhabited by vermin.</string>
<string name="SewerLevel_Water">water</string>
<string name="SewerLevel_Grass">grass</string>
<string name="SewerLevel_SecretDoor">secret door</string>

Russian (values-ru/strings_all.xml):

<string name="Sewers_Title">Канализация</string>
<string name="Sewers_Desc">Древняя канализация под городом. Влажная, темная и населенная грызунами.</string>

• Sewer Level Events: `scripts/levels/Sewers.lua` - Special events, rat king quest
• Rat King Quest: `scripts/npc/RatKing.lua` - Optional boss encounter
• Hidden Rooms: `scripts/objects/Pedestal.lua` - Pedestal puzzles

• Rat Mob - Primary enemy
• Snail Mob - Passive enemy
• Deep Snail Mob - Water variant
• Crab Mob - Armored enemy
• Goo Mob - Boss (depth 5)
• Rat King Mob - Optional boss
• Pet Mechanic - First pets available here
• Secrets Mechanic - Hidden doors/rooms

• Depth Range: 1-5 (5 is boss level)
• Theme: Damp stone, water pools, grass patches
• Hazards: Water (slows movement), hidden traps, gas traps
• Special Features:
  • Rat King quest (depth 3-4)
  • Hidden rooms behind secret doors
  • Pedestal puzzles for rewards
  • Wells for health restoration
• Progression:
  • Depths 1-2: Rats, Snails (easy)
  • Depths 3-4: Crabs, Deep Snails, Gnolls (medium)
  • Depth 5: Goo Boss (required to proceed)
• Shortcuts:
  • Sewer shortcut to Prison (unlocked after Goo)
  • Backtracking for missed items

• Water Pools - Terrain feature, slows movement
• Grass Patches - Tall grass, concealment
• Pedestals - Item placement triggers
• Statues - Decoration, sometimes interactive
• Wells - Health restoration
• Barricades - Destructible cover
• Secret Doors - Hidden passages

SewerLevel generation:

// SewerLevel.java
public class SewerLevel extends Level {
    @Override
    protected void createMap() {
        // Water pool generation
        // Grass patch placement
        // Standard room/corridor layout
    }
 
    @Override
    public String tilesTex() {
        return "tiles/sewer.png";
    }
}

Boss level check:

// Dungeon.java
public static boolean isBossLevel() {
    return Dungeon.depth % 5 == 0; // 5, 10, 15, 20, 25
}