diff --git a/IMPLEMENTATION-PLAN.md b/IMPLEMENTATION-PLAN.md
index 647bdce..4ebc173 100644
--- a/IMPLEMENTATION-PLAN.md
+++ b/IMPLEMENTATION-PLAN.md
@@ -122,7 +122,7 @@
 
 ---
 
-## Phase 5: Creatures & Ecology
+## Phase 5: Creatures & Ecology ✅
 
 **Цель:** Живая экосистема в Каталитических Пустошах  
 **Зависимости:** Phase 2, Phase 3
diff --git a/PROGRESS.md b/PROGRESS.md
index 9e11541..d193380 100644
--- a/PROGRESS.md
+++ b/PROGRESS.md
@@ -1,7 +1,7 @@
 # Synthesis — Development Progress
 
 > **Last updated:** 2026-02-12  
-> **Current phase:** Phase 4 ✅ → Ready for Phase 5
+> **Current phase:** Phase 5 ✅ → Ready for Phase 6
 
 ---
 
@@ -58,15 +58,29 @@
 - [x] 4.7 HUD — UIScene overlay: health bar, quick slots, inventory info, controls hint (`src/scenes/UIScene.ts`)
 - [x] Unit tests — 39 player + 28 inventory + 12 interaction + 11 crafting + 13 projectile + 15 quickslots + 8 UI = 126 tests (222 total)
 
+### Phase 5: Creatures & Ecology ✅
+- [x] 5.1 Creature data — 3 species: Crystallids, Acidophiles, Reagents (`src/data/creatures.json`)
+- [x] 5.2 AI behavior — FSM: idle → wander → feed → flee → attack (`src/creatures/ai.ts`)
+- [x] 5.3 Metabolism — energy drain, feeding from resources, starvation damage (`src/creatures/metabolism.ts`)
+- [x] 5.4 Population dynamics — counting, reproduction, initial spawning (`src/creatures/population.ts`)
+- [x] 5.5 Life cycle — egg → youth → mature → aging → natural death (`src/creatures/lifecycle.ts`)
+- [x] 5.6 Interaction — projectile collision (armor), observation, creature→player melee (`src/creatures/interaction.ts`)
+- [x] 5.7 Ecosystem test — populations fluctuate, don't die out (`tests/ecosystem.test.ts`)
+- [x] 5.8 GameScene integration — all creature systems in update loop, debug overlay
+- [x] ECS components: Creature, AI, Metabolism, LifeCycle (`src/ecs/components.ts`)
+- [x] Species registry with string/numeric ID lookup (`src/creatures/types.ts`)
+- [x] Creature factory (`src/creatures/factory.ts`)
+- [x] Unit tests — 51 creature + 16 interaction + 5 ecosystem = 72 tests (293 total)
+
 ---
 
 ## In Progress
 
-_None — ready to begin Phase 5_
+_None — ready to begin Phase 6_
 
 ---
 
-## Up Next: Phase 5 — Creatures & AI
+## Up Next: Phase 6 — Run Cycle
 
 _(See IMPLEMENTATION-PLAN.md for details)_
 
@@ -87,3 +101,4 @@ None
 | 3 | 2026-02-12 | Phase 2 | ECS foundation: world + time, 5 components, movement + bounce + health systems, Phaser bridge (polling sync), entity factory, GameScene with 20 bouncing circles at 60fps, 39 tests passing |
 | 4 | 2026-02-12 | Phase 3 | World generation: simplex noise (seeded), 80x80 tilemap with 8 tile types, Catalytic Wastes biome, camera WASD+zoom, minimap with viewport indicator, 21 tests passing (95 total) |
 | 5 | 2026-02-12 | Phase 4 | Player systems: WASD movement + tile collision, weight-based inventory, resource collection, crafting via chemistry engine, projectile throw, 4 quick slots, UIScene HUD overlay (health bar, slots, inventory), 126 new tests (222 total) |
+| 6 | 2026-02-12 | Phase 5 | Creatures & Ecology: 3 species (Crystallid/Acidophile/Reagent), FSM AI (idle/wander/feed/flee/attack), metabolism (energy drain/feeding/starvation), life cycle (egg→youth→mature→aging→death), population dynamics, projectile-creature collision with armor, creature→player melee, ecosystem simulation test, 72 new tests (293 total) |
diff --git a/src/scenes/BootScene.ts b/src/scenes/BootScene.ts
index 3e59f18..00a78a0 100644
--- a/src/scenes/BootScene.ts
+++ b/src/scenes/BootScene.ts
@@ -30,7 +30,7 @@ export class BootScene extends Phaser.Scene {
 
     // Version
     this.add
-      .text(cx, cy + 80, 'v0.4.0 — Phase 4: Player Systems', {
+      .text(cx, cy + 80, 'v0.5.0 — Phase 5: Creatures & Ecology', {
         fontSize: '12px',
         color: '#333333',
         fontFamily: 'monospace',