is a turn-based strategic artillery game that expands on the original's core mechanics of celestial warfare. In this "arms race" on a cosmic scale, players develop their home planets with infrastructure and increasingly powerful weaponry to annihilate rivals while navigating the unpredictable gravity fields of a moving solar system. Online and Multiplayer Features
: The game supports online matches for up to 8 players. It also retains a "hotseat" mode for local "pass-and-play" on a single computer. Interplanetary Enhanced Edition online
The "Enhanced" version introduced several key upgrades over the 2015 original: is a turn-based strategic artillery game that expands
: Features elliptic orbits and a refined physics engine where every massive body exerts gravitational force on projectiles. It also retains a "hotseat" mode for local
: Customizable turn timers (often set to 120 seconds) prevent matches from stalling.
: Includes advanced weaponry like coil cannons , MIRV weapons , and nuclear missiles .