About This Demo

Current Version Controls Guide

新游戏: Opens the new game interface (choose difficulty/hero count/enemy count)

继续当前游戏: Retains hero positions; enemies respawn

设置: Opens settings interface (adjust music/sound volume)

退出游戏: Closes the game

Left-click grid cell: Opens this grid cell

Right-click excavated grid cell: Opens the trap deployment window (options: Spike Trap / Machine Gun / Auto-Mine / Tripwire Mine)

Key 1: Provocation Function

WSAD: Move Camera

Mouse Scroll: Adjust Zoom Level

Current DEMO Version Features:

1、Allows real-time DIY tunnels and traps during combat with no resource limits, enabling players to test the tunnel system freely.

2、Lets players freely set the number of hero characters (1-3) and enemy units (1-100) before battle, helping players experience the core combat mechanics.

3、Introduces hero luring skills, weapon noise attraction, enemy pursuit mechanics, and cone-shaped vision for players to explore key combat systems.

4、Simplified win/lose conditions: Victory by eliminating all enemies, defeat if all allies are wiped out.

5、Enemy auto-pathfinding AI.

Future Full Version Overview:

1931-1945: Their Childhood - Tunnel Warfare  

——Build Your Underground Great Wall in a Dynamic WWII Sandbox, Experience Historically Inspired Strategic Survival  

[V] Freely Construct Tunnel Networks  

[V] Realistic Enemy AI Launching Dynamic Raids  

[V] Village Management × Tech Tree Evolution  

[V] Data-Driven Combat Systems  

As an underground resistance commander, you'll defend against escalating enemy sweeps through tunnel engineering, resource allocation, and guerrilla tactics. Each assault dynamically adapts to your threat level - your tech choices unlock diverse combat styles from Trap Masters to Sniper Specialists. When invaders come, calmly direct your militia: split enemy forces using tunnel networks, protect civilians and food supplies, and repel brutal aggressors until final victory... Remember, every decision determines your village's survival!  

▌Core Experience  

• Infinite Tactical Combinations: Connect underground nodes to build unique defense systems  • Dynamic War Sandbox: Enemies adapt troop composition and strategy to your strength  

• Historical Immersion: Authentic 1940s Street fighting battleground  

• Multi-Dimensional Development: Train militia classes (Engineer/Sniper/Demolition Expert)  

• Endurance Challenge: Protect villagers and granaries through seasonal cycles until 1945  

"This is more than combat—it's the legacy of wisdom and perseverance. Can you keep the flame of hope alive through the raids?"  

Join us to build your own Underground Great Wall!  

Mature Content Description

The developers describe the content like this:

The game contains frequent depictions of:
Firearms combat with lethal outcomes
Explosive takedowns
Melee weapon eliminations
Additionally, protagonists regularly use improvised medical items for healing.