Planet Killer by Talisman One Studio is out on Steam with native Linux and SteamOS support.

Planet Killer is a physics-driven destruction roguelite in which every shot permanently reshapes a fully simulated, pixel-based planet battlefield: carve craters, trigger chain reactions and survive escalating planetary defenses.

The game costs 13.49 euros normally, with a -20% introductory price of 10.79 euros at launch (offer ends 16 September). A free demo is available on Steam.

Planet Killer is a physics-driven destruction roguelite where every shot permanently reshapes the battlefield. Unleash devastating weapons into fully simulated pixel-based planets, carve massive craters, trigger chain reactions, and survive relentless planetary defenses.

Choose your starting ship, each with unique strengths and weaknesses, and unlock new ships by destroying planets.

Advanced procedural planet generation makes every planet unique with detailed cities, surface features, cloud/storm systems, continents, islands, and oceans.

Stack hundreds of modular weapons to create devastating combinations: missiles, cannons, lasers, rapid-fire barrages, experimental weapons. Unlock over 128 unique starting ships for endless replayability.

Source: Steam