Till you Last: Safe Zone

Experience endless defense in this sandbox strategy game! Build your base, 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, unit management, and survival elements. Grow your zone into a secure fortress, rescue civilians to expand your population or evacuate them to safety. Enhance your people's quality of life, eliminate threats and infected using diverse tactics, and deploy a wide array of units, air and land vehicles (WIP), buildings, and weapons. Handle randomized events (WIP) from minor incidents to catastrophic disasters—all from the power of your mobile device!

Sandbox gameplay at your fingertips!

Inspired by survival colony, RTS, and sandbox simulation games on PC, with survival elements to be implemented.

Minimum specs for acceptable performance:

DEVICE: Oppo A5S or equivalent/better

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

GPU: PowerVR GE8320 or equivalent/better

RAM: 32GB storage with 3GB RAM or equivalent/better

v0.1 Released:

Endless defense outpost/base building survival RTS sandbox

Units and buildings with functional logic

Endless zombie horde: they speed up with each kill

Civilian/workers/builders management

Resource collection logic and requirements

Units, buildings, and resources saving

One reliable main sentry gun with level upgrades

Simple basic research tree

Tactical command system for units

WIP v0.2 to be released:

Reported bug fixes – we need player input! Thanks!

Early features improvement

Vehicles: civilian and military vehicles

Random interactive events: civilian rescue bus crash, helicopter crash, plane crash, essential resources drop – needs improvement

Main sentry gun upgrade improvements and features

Player suggestions: to be collected

Not started yet – v0.3 release:

Reported bug fixes – we need player input! Thanks!

Civilians & VIPs rescue operations

Expedition

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:

More sandbox options:

Grid size

Starting units

Starting resources

Enemy variants and otherworldly species

Enemy pathing and logic improvement

Human raiders

Unit cover system

Not started yet – v0.5 release:

ART & ANIMATION IMPROVEMENTS/REWORKS!

FPS performance optimization!

Random events on expeditions

Not started yet – v0.6 release:

Weather system

Day and night cycle system

Quarantine facility

Infection system

Misc. features to be implemented:

Unit customizations

Theme customization

And more to be envisioned!

This project isn't finished until I'm satisfied. Thank you for supporting me!

Known issues/bugs:

- Walls/defenses become double/triple layered after loading a saved game (making your walls extremely sturdy, just as a future president might want)

- Zombies/infected become super fast after 5000 kills or 1000 evacuated when continuing a saved game

- Low FPS on main menu (under investigation but not a priority at the moment—apologies)

- Fairly large install size due to how-to-play animations (uncompressed GIF frames were used for smooth, clear animations)

- (Priority) Rescued survivors in holding disappear when continuing a saved game—will be fixed in the next update. For now, evacuate them via chopper before quitting/exiting the game.

- Already dead single units appear alive when continuing a saved game

- Workers and builders count reset to 4/5 when continuing a saved game

- Sometimes builders get stuck building something invisible (they can still execute latest build/unbuild commands)

- Sometimes builders get stuck between built walls—use the finger tool in utilities options to interact with units

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