OpenBack — Online Territorial War and Strategy Game

OpenBack is a browser-based territorial war and real-time strategy game where players expand nations across a world map, manage troops and gold, build military and economic structures, form alliances, and conquer rival territory.

The game combines nation building, country conquest, geopolitical strategy, diplomacy, economy management, empire expansion, military planning, and world domination with fast .io-style territory control. Its evolving gameplay includes solo nations, online multiplayer, ranked competition, armies, aircraft, tanks, ships, missiles, and defensive infrastructure.

Play solo against computer-controlled nations, host or join private multiplayer games with shareable lobby links, or enter ranked 1v1 matchmaking against another online player. OpenBack runs directly in a modern desktop or mobile web browser without a download.

OpenBack game features

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Tutorial

OpenBack World Mechanics and Match Modifiers Guide

Learn encirclement, war exhaustion, strategic objectives, logistics cargo, fog of war, shared control, and all six natural disasters.

Encirclement and war exhaustion

Encirclement is active in normal OpenBack rules. A fully surrounded pocket loses troops during repeated checks and is annexed only after remaining continuously closed for 15 seconds, giving the defender time to reopen a corridor. Long fighting also builds war exhaustion, gradually reducing income and troop growth; peace recovers it more slowly than war builds it.

Strategic objectives

When enabled, three to eight neutral objectives are placed far from starting nations. Holding an objective can award gold, troops, radar range, or victory points. Control is checked repeatedly, so the rewards create contested locations rather than one-time pickups.

Six natural disasters

The Natural Disasters modifier rotates through earthquakes, tsunamis, tornadoes, wildfires, meteors, and droughts in a deterministic shuffled cycle. Earthquakes and wildfires can create several impact centers, tornadoes travel along a visible path, and tsunamis move inland from a coast or become a flash-flood surge on landlocked maps.

  • Do not cluster every essential structure in one location.
  • Watch moving event paths before committing more troops.
  • A disaster can force both sides to rethink the same frontline.
  • Natural Disasters is optional in solo and private lobbies and can appear in ranked rotation.

Fog, logistics, and shared control

Fog of War hides distant information outside friendly vision instead of placing a simple gray filter over the map. Logistics cargo makes rail benefits visible and interruptible. In private Shared Control games, two or more players can operate the same nation while the configured team size governs how players are grouped.