Games like RiftStar Raiders

Geometry Wars 3: Dimensions Evolved is a frenetic, arcade-style shooter with 3D grids and intense action. The game features a campaign mode with 50 stages, classic modes, and online cooperative play. With a wide range of upgrades and customization options, Geometry Wars 3 provides a challenging and engaging experience for fans of the series and newcomers alike.

"Overture is a single-player Role Playing game that combines action-adventure and roguelike elements for intense and challenging gameplay. Explore vast randomly generated dungeons, engage in difficult boss fights, and collect an arsenal of weapons and loot. With 24 character classes and a chiptune soundtrack, Overture promises a delightful and immersive experience, but be warned: it will 'kick your butt and not apologize'."

Hive Jump is a fast-paced, action-platformer where you play as a brave space marine tasked with eradicating alien hives. Use a variety of weapons and equipment to navigate through procedurally generated levels, and work together with your team in local or online co-op. Fight challenging bosses, collect resources, and upgrade your gear to save humanity from the alien threat.

Pilot your ship in the seamless open world made of space, planets, and more. Find new ships and equipment, find allies and beat all the enemies in this open source space shooter! Destination Sol is a free-to-play hardcore space arcade/RPG. You start as a pilot of a small fighter ship on the edge of a star system, and you're free to explore the game world, land on planets, fight with enemies, upgr…

Krater is a real-time squad-based RPG with robust tactical combat, crafting, and questing, set in a post-apocalyptic Sweden. The game features single-player campaign, as well as multiplayer co-op missions for up to 2 players. Its gameplay includes humorous elements, challenging battles, and procedurally generated dungeons for endless replayability. The game has received updates to improve balance, loot generation, and overall performance since its release.

Overload is a Sci-Fi shooter game with both single-player and multiplayer modes, offering an engaging story campaign across 15+ atmospheric levels and various customization options. With 16 upgradeable weapons, over 20 robot types, and a pulse-pounding soundtrack, this game delivers intense action, awesome graphics, and high replayability, including Challenge Mode and survival challenges. However, be prepared for some grinding.

"Goliath" is a single-player Science Fiction Fighting game offering around 4 hours of playtime. Players explore a mysterious world and craft giant robots, known as Goliaths, to battle monsters and gather resources. The goal is to survive amongst the giant creatures in this dangerous and broken land by scavenging for resources and building stronger Goliaths.

GALAK-Z is a single-player Science Fiction Shooter game with phenomenal game mechanics and beautiful graphics. It offers procedurally generated worlds, challenging A.I. enemies, and anime-inspired spacecraft. The Void DLC includes endless gameplay, online leaderboards, and a daily challenge for players to compete worldwide. Additionally, Arcade Mode allows players to replay failed missions without losing progress.

Serious Sam’s Bogus Detour is an all-new action-adventure in the legendary Serious Sam saga from Hammerwatch developer Crackshell. Battle through beautiful Mediterranean locales, dangerous biological weapons labs and even high-tech moon bases as a one-man wrecking crew or in four-player online cooperative for maximum chaos! Dominate the chaotic Survival and Versus modes or make your own mods, mode…

Air Missions: Hind is a combat flight simulator that puts you in the cockpit of the Mi-24 Hind, a legendary attack helicopter. Engage in thrilling aerial battles across a variety of missions, showcasing both cold war and modern conflict scenarios. Experience realistic flight dynamics, weapon systems, and engaging enemies, while flying in diverse and beautiful environments.