Tremulous

Unvanquished is a free, open-source first-person strategy game shooter, pitting technologically advanced human soldiers against hordes of highly adaptable aliens. Players can choose from either team, providing for an entirely different experience on both sides, as humans focus on long-range firepower while aliens rely instead on quick movement and stealth. The goal of each match is to destroy the enemy base, preventing members of the opposing team from spawning. Upgrades for both teams are earned by a combination of individual performance and team map control, unlocking access to more powerful weapons and equipment for the humans, and larger, more ferocious forms for the aliens.

Kal Wardin, our hero, is a retired N.O.V.A. veteran summoned once again to don his Mobile Armor Suit in defense of the Colonial Administration forces. Helped by Yelena, his personal AI Agent, Kal must protect humanity's destiny by entering the battlefield against alien invaders while uncovering the mystery behind their sudden attack.

Akka Arrh is a previously unreleased prototype game created 1982 for the arcade. It saw it's first release in 2022 as part of the the Atari 50: The Anniversary Celebration.

A small, fast-paced game inspired by SEGA’s "Fantasy Zone" series. Play through four worlds in frenetic arcade action as you help the hero, Opbot, evade aliens, enemies, and things from another dimension on their way to freedom!

Warblade is a shareware computer game for Microsoft Windows and OS X, written by Norwegian developer Edgar M. Vigdal. The Windows version runs well on Linux under Wine. It is also available for retail in the App Store for iOS devices (in iPhone/iPod Touch and iPad versions). The game is a 2D space shooter in the vein of the perennial classic Galaga. It is a rewrite and modernization of a popular Amiga shareware game, Deluxe Galaga, which was written by the same author back in the mid-1990s. Where technically possible, the graphics and sounds are respectful to their Amiga origins.

The Cycle is a Competitive Quest Shooter or PvEvP for insiders. You play as a prospector sent on Fortuna III, a living and unstable planet swarming with hostile alien wildlife. Compete or deal a fragile pact with other Prospectors to claim as many resources as possible.

Explorers have uncovered a previously unknown megacity that is well protected from scouting incursions. When all attempts at penetrating the border are met with destruction, the call goes out to the Ravens, a team of mercenaries hired by the government. As a Raven, you must pilot armored mech suits and destroy enemy weapon systems. A new first-person view allows you to experience a mission from the cockpit. Silent Line: Armored Core also lets you go head-to-head with up to four players or team up for fierce two-on-two battles.

Moon Patrol is a side-scrolling shooter that puts players at the controls of a six-wheeled moon rover that can jump and shoot. The goal is to move through the entire course as quickly as possible while shooting enemies for additional points. Cannons are mounted on the front and top of the vehicle, and both fire simultaneously when the fire button is pressed. Rocks, mines, and pits in the course prevent you from just holding to the right for maximum speed. Rocks and mines can be shot, but pits must be jumped. Some enemies fire shots that create new pits in the course, forcing players to react quickly.

Blazing Star is a scrolling shooter video game for the Neo Geo home game system. It is the sequel to the acclaimed Neo Geo shooter Pulstar, which was itself a close cousin to the R-Type franchise. A typically hefty Neo Geo ROM at 346 Mb, the game makes extensive use of pseudo-3D prerendered sprites, brief anime and CGI cutscenes (mostly during the intro sequence), and frequent Engrish voice samples and captions. While Blazing Star was superior in many respects to previous shooter games, some fans compare it unfavorably with Pulstar on the basis that Blazing Star was overly easy and there are those that prefer the simpler 2D sprite look over the prerendered sprites that came to dominate many of the more recent shoot-em-ups.

Salamander is a scrolling shooter arcade game released by Konami as a spin-off to Gradius. It introduced a simplified power-up system, two-player cooperative gameplay and both horizontally and vertically scrolling stages. Some of these would later become the norm for future Gradius games.

Be the last hope against the mutant infestation. Enter the aftermath of a scientific experiment gone horribly wrong. Xenowerk is a top-down action shooter challenging your combat skills in an underground science lab. Descend deeper into the abyss and explore the tarnished levels. Armed with a flashlight as your main guidance, you’ll never know what’s lurking in the dark!