Featuring both local and online play for up to eight players, the objective is to destroy all five enemy cities. Mined materials and collected energy are used to construct new buildings and fire weapons. Buildings can provide the aforementioned resources, along with various weapon options (railguns, missiles, and lasers), and intelligence on enemy locations; buildings must be connected to cities or existing structures. Research can be conducted to unlock new structures or upgrades to buildings and cities. Planets rotate and revolve each turn and weapons are governed by gravitational forces, both of which makes landing the perfect shot difficult. The AI is good at aiming, although the focus of the game is online play. Interplanetary offers some solid, entertaining turn-based gameplay.