G Prime is a steampunk-styled gravity puzzle game developed by Soma Games, released in 2015 for PC, Mac, and Xbox One. Players take on the role of a sounding officer aboard Ptolemy Station, tasked with launching sub-etheric reconnaissance rockets into the gravitational fields of an enormous incoming cloud called The Rain — a solar-system-spanning mass of rock, ice, metal, and asteroids rich with valuable materials. Each mission involves navigating rockets through increasingly complex environments filled with iceteroids, theophosphorus formations, and quicksand clouds, using gravitational forces to guide trajectories in a slingshot-style mechanic. The core challenge lies in reading and manipulating gravity fields across a series of escalating puzzle scenarios. The game's visual design pairs a moody, atmospheric aesthetic with its steampunk setting, creating a distinctive tone that sets it apart from more conventional physics-based puzzle titles.
