Till you Last: Safe Zone

Experience endless defense and base building in this casual sandbox survival simulator! Manage units and strategize your way to victory.

EARLY ACCESS

Thank you for your support!

Dive into a realistic endless defense sandbox simulator with base building, unit management, and 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, eradicate enemies and infected using diverse tactics, and command a wide array of units, air and land vehicles (WIP), buildings, and weapons. Handle random events (WIP) from minor incidents to catastrophic disasters—all from your mobile device!

SANDBOX gameplay at your fingertips!

Inspired by survival colony, RTS, and sandbox simulation games on PC, with more survival features coming soon.

Minimum specs for acceptable 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 storage, 3GB RAM or equivalent/higher

v0.1 Released!:

Endless Defense Outpost/Base Building Survival RTS SANDBOX

Functional units and building systems

Endless zombie hordes that speed up with each kill

Civilian, worker, and builder management

Resource collection mechanics and requirements

Save system for units, buildings, and resources

Upgradable main sentry gun

Basic research tree

Tactical command system for units

WIP v0.2 coming soon:

Bug fixes based on player feedback—we need your input! Thanks!

Early feature enhancements

Civilian and military vehicles

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

Main sentry gun upgrade improvements

Collecting player suggestions

Planned for v0.3:

Further bug fixes with player input—thank you!

Civilian & VIP rescue operations

Expedition system

Deeper research trees and upgrades

Unit gear and individual customization

Explosives: artillery, grenade launchers, rockets

Manned and unmanned emplacements

Population mood system (happiness/sadness)

Planned for v0.4:

Expanded sandbox options:

Grid size customization

Starting unit selection

Initial resource settings

New enemy types and otherworldly species

Enemy pathing and AI improvements

Human raiders

Unit cover system

Planned for v0.5:

ART & ANIMATION OVERHAUL!

FPS PERFORMANCE OPTIMIZATION!

Random events during expeditions

Planned for v0.6:

Dynamic weather system

Day and night cycle

Quarantine facility

Infection mechanics

Miscellaneous features to implement:

Unit customization options

Theme customization

And more exciting additions to come!

This project will evolve until I'm fully satisfied—thank you for your ongoing support!

Known issues/bugs:

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

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

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

- Large installation size due to uncompressed how-to-play animation frames (used for smooth, clear visuals)

- (Priority) Rescued survivors in holding disappear when loading a saved game—fix coming next update. Workaround: evacuate them via chopper before quitting.

- Occasionally, single units appear alive after loading a saved game despite being eliminated

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

- Builders may occasionally get stuck constructing invisible objects (they still respond to latest build/unbuild commands)

- Builders can become trapped between built walls—use the finger tool in utilities to interact with units

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