Till you Last: Safe Zone

Experience endless base defense in this sandbox strategy game! Manage units and survive in a dynamic survival simulator.

EARLY ACCESS

Thank you for your support!

A casual, realistic sandbox simulator blending endless defense, base building, and unit management with survival elements. Develop your zone into a secure fortress, rescue civilians to grow your population or evacuate them to safety. Enhance your people's quality of life, eliminate threats and infected using diverse strategies, and command a wide range of units, air and ground vehicles (WIP), buildings, and weapons. Tackle randomized events (WIP) from minor incidents to catastrophic disasters—all powered by your mobile device!

Sandbox gameplay at your fingertips!

Inspired by survival colony, RTS, and sandbox simulation games on PC, with integrated survival elements.

Minimum specs for smooth performance:

DEVICE: Oppo A5S or equivalent/higher

CPU: Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) or equivalent/higher

GPU: PowerVR GE8320 or equivalent/higher

RAM: 32GB with 3GB RAM or equivalent/higher

v0.1 Released!:

Endless Defense Outpost/Base Building Survival RTS Sandbox

Functional units and building mechanics

Endless Zombie Horde: Speed increases with each kill

Civilian/Worker/Builder Management

Resource collection logic and requirements

Save system for units, buildings, and resources

One reliable main sentry gun with upgrade levels

Basic research tree

Tactical command system for unit control

WIP v0.2 Upcoming:

Reported bug fixes – player feedback appreciated! Thank you!

Early feature enhancements

Civilian and military vehicles

Random interactive events: Civilian rescue, bus crashes, helicopter crashes, plane crashes, essential resource drops (needs refinement)

Main sentry gun upgrade improvements and new features

Player suggestions: Under review

Not Started Yet v0.3 Release:

Reported bug fixes – player feedback appreciated! Thank you!

Civilian & VIP rescue operations

Expedition missions

In-depth research trees and upgrades

Unit gear and individual customization

Explosives: Artillery, grenade launchers, rockets

Manned/unmanned emplacements

Population mood system (happiness and sadness)

Not Started Yet v0.4 Release:

Expanded sandbox options:

Grid size customization

Starting unit configurations

Initial resource settings

Enemy variants and otherworldly species

Enemy pathing and AI improvements

Human raiders

Unit cover system

Not Started Yet v0.5 Release:

ART & ANIMATION OVERHAULS!

FPS PERFORMANCE OPTIMIZATION!

Random events during expeditions

Not Started Yet v0.6 Release:

Weather system

Day and night cycle

Quarantine facility

Infection system

Miscellaneous features to implement:

Unit customization options

Theme customization

And more exciting additions planned!

This project continues until it meets my vision—thank you for your support!

Known Issues/Bugs:

- Walls/defenses become multi-layered after loading a saved game (resulting in extremely sturdy walls)

- Zombies/infected move extremely fast at 5000+ kills or 1000+ evacuated when continuing a saved game

- Low FPS on main menu (under investigation but not top priority—apologies)

- Large install size due to uncompressed How-To-Play animation frames (for smooth, clear visuals)

- (Priority) Rescued survivors in holding disappear when continuing a saved game—fix coming next update; temporary workaround: evacuate them via chopper before quitting

- Occasionally, deceased units reappear alive when continuing a saved game

- Worker and builder counts reset to 4/5 when continuing a saved game

- Sometimes builders get stuck constructing invisible objects (they still respond to latest build/unbuild commands)

- Occasionally builders get trapped between built walls—use the finger tool in utilities to interact with units

- Workers may wander off—toggle collection tool to redirect them to work