🛡️ Car Defense (载具守卫战)

A Hardcore RPG Survival Adventure Across 12 Unique Worlds

In this intense Factorio scenario, your vehicle is not just transport — it is the last bastion of civilization. As both your base and your life, it must be defended against relentless evolutionary threats while you grow from a lone survivor into a legendary commander.

🎮 Core Mechanics

• One Vehicle, One Life: The game begins only after placing your vehicle. If all vehicles are destroyed by the swarm, the game resets.
• Mobile Command Center: Your vehicle features massive internal storage with automated Blue/Red chest logic for seamless item management on the move.

Ultimate Goal: Conquer all 12 worlds and survive 3500 waves!

⚙️ Deep RPG & Class System

Customize your survivor through attributes and class talents:

Four Core Attributes

• Strength (STR): Increases melee damage, backpack capacity, and combat drone effectiveness.
• Agility (AGI): Boosts hand-crafting speed and movement velocity.
• Magic (MAG): Unlocks powerful spells and the ability to summon friendly Biter Nests.
• Vitality (VIT): Raises max HP and enhances healing from fish.

Choose Your Class

• Warrior (☆☆☆ Difficulty): High durability, area damage, strong drones. Ideal for beginners.
• Mage (☆☆☆☆☆ Difficulty): Powerful late-game spells and summons. Requires strategic mastery.
• Builder (☆ Difficulty): Economic and technological advantages. Perfect for base-building enthusiasts.

Progression: Unlock new talents every 35 levels, stacking abilities as the game scales.

🌍 Explore 12 Unique Worlds

Each dimension presents distinct terrain, challenges, and rewards:

• World 1 [Valley]: Classic mountainous terrain with 1.5× treasure frequency. Biter damage does not decay.

• World 2 [Four Seasons]: Four planetary biomes coexist. Starts with four massive 1-million ore patches; assembly machine spawn rate doubled.

• World 3 [Water World]: Island-based map. Your vehicle transforms into a Fishing Boat when placed near deep water, harvesting 2 fish every 30 seconds.
• 🏝️ Island System
• Five island types: Military, Industrial, Resource, Technology, and Construction Islands
• Buy Islands: Spend coins to purchase islands; they automatically produce items and yield coins/experience based on investment ratio
• Upgrade Islands: Increase investment to boost production efficiency and rewards
• Island Rotation: Islands spawn in order Military→Industrial→Resource→Technology→Construction, ensuring even distribution

• World 6 [Imperial Arena]: Earn 5K gold + 200 XP every 25 waves. Vehicle space doubled, includes linked chests; all assembly machines start activated.

• World 7 [Dimensional Escape]: Begin with a Spidertron. Navigate five planetary zones with supply points along the way.

• World 8 [Dimensional Space]: Every 45 minutes, your base teleports to a new planet. Small, high-intensity map with constant biter spawning. All shop tiers unlocked at start.

• World 9 [Yanmen Pass]: Vertical defense map. Biters attack from above, build fortresses, and launch nuclear strikes at your silo.

• World 10 [Battle of Red Cliffs]: Lead your army in military-style combat. Research "Morale" tech and destroy enemy barracks to weaken attacks.

• World 11 [Lost City]: Features a complete defense line and Energy Grid system. When Energy Grid is active, laser turrets have infinite damage and infinite power, and take no damage. Autonomous heavy artillery automatically charges to destroy enemy fortresses. Recycling boxes can convert any item into Energy Grid power!

• World 12 [Last Stand]: Forced into a desperate three-sided water trap, unleashing amazing combat will. Start with +1 talent and automatically research technology by killing biters. Discover port (research yellow science) to unlock new planet terrain.

🧩 Wild Assembly Machines

Capture randomly spawned machines by surrounding them with 10 structures. They produce free resources, gain XP, and can be upgraded.

⚠️ Important: At wave 1000, biters will destroy all wild assembly machines!

🚗 Vehicle Interior Features

• 📦 Blue Chest: Transfers items from your backpack into vehicle storage.
• 📦 Red Chest: Moves items from vehicle storage to the outside.
• 🛒 In-Vehicle Shop: Purchase minerals (first buy free), buy XP, pause biter attacks for 15 minutes, or reclaim land from water.

🏆 World Bonus System

Reach wave 1500 in any world to unlock its permanent global bonus. Bonuses strengthen every 500 waves thereafter.

🛒 Main Shop Upgrades

Spend gold to:

• Reduce biter damage to buildings/vehicles
• Increase all player damage output
• Raise limits for nests, worms, and mines
• Boost miner productivity
• Upgrade walls, turrets, and allied biters

🧙 RPG Spellcasting

With sufficient MAG attribute, consume raw fish to cast spells such as:

• Area Repair
• Chain Lightning
• Invincible Turret
• Teleport Back to Vehicle
• Defense Drones
• Biter Special Forces

Pet System

Raise and command battle-hardened companion bugs that fight alongside you, growing stronger with every battle.

Getting Pets

• Pet Eggs (Low/Mid/High): Purchase from the shop to hatch a random pet. Price scales with tier.
• First Magicka Milestone: Receive a free Small Biter when your Magicka first reaches 100.
• Pet Limit: Maximum 3 pets per player.

Quality & Growth

Five quality tiers: Normal → Rare → Fine → Epic → Legendary. Higher quality grants more skill points per level and better stat growth. Each pet starts with base stats of 5 HP and 5 ATK, which you can freely allocate as they level up.

Hunger System

Pets consume fish from your inventory to maintain hunger. Hunger ≥ 60% is required for combat deployment. Without fish, hun