Till you Last: Safe Zone

Experience endless defense in a sandbox world! Build your base, manage units, and survive in this realistic strategy simulator.

EARLY ACCESS

Thank you for your support!

This is 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 grow your population or evacuate them to safety. Improve your people's quality of life, and cleanse threats—both infected and hostile foes—using diverse tactics. Command a wide array of units, utilize air and land vehicles (WIP), construct buildings, and deploy 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, now adapted with survival elements for mobile.

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: 3GB (32GB total storage) or equivalent/better

v0.1 Released!:

Endless Defense Outpost/Base Building Survival RTS SANDBOX

Core functionality for units and buildings

Endless Zombie Horde: Gets faster with every kill

Civilian/Worker/Builder Management

Resource collection logic and requirements

Save system for units, buildings, and resources

One reliable main sentry gun with level upgrades

A simple basic research tree

Tactical command system for units

WIP for v0.2 release:

Reported bug fixes—we need your input! Thank you!

Early feature improvements

Vehicles: Civilian and military types

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

Main sentry gun upgrade improvements and new features

Player suggestions to be collected

Not started yet for v0.3 release:

Reported bug fixes—we need your input! Thank you!

Civilians & VIP rescue operations

Expedition system

In-depth research trees and upgrades

Unit gear and individual customization

Explosives: Artillery, grenade launchers, rockets

Manned/unmanned emplacements

Population mood system (happiness/sadness)

Not started yet for v0.4 release:

More sandbox options:

Grid size

Starting units

Starting resources

Enemy variants and otherworldly species

Enemy pathing and AI improvement

Human raiders

Unit cover system

Not started yet for v0.5 release:

ART & ANIMATION IMPROVEMENTS/REWORKS!

FPS performance optimization!

Random events during expeditions

Not started yet for v0.6 release:

Weather system

Day and night cycle

Quarantine facility

Infection system

Miscellaneous features to be implemented:

Unit customizations

Theme customization

And more ideas to come!

This project will continue until I am fully satisfied. Thank you for supporting me!

Known issues/bugs:

-Walls/defenses become double/triple layered after loading a saved game (making them extremely sturdy, "just like the future president wants the wall to be")

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

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

-Fairly large install size due to How-To-Play animations (uncompressed GIF frames were used for smooth, clear animation)

-(Priority) Rescued survivors in holding disappear when continuing a saved game. Will be fixed next update. Workaround: Evacuate them via chopper before quitting.

-Occasionally, single units that were dead are alive upon continuing a saved game.

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

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

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

-Workers may wander off occasionally; toggle the collection tool to make them return to work.