Games like Sentinel

Nightork Adventures - Beyond the Moons of Shadalee is an arcade shooter game. You fly with a spaceship through procedurally generated caves and fight against evil demons using magic colors. There is a campaign of 30 levels and 6 boss monsters. It also comes with a level editor, so you can create your own caves and missions.

In SOL Exodus, players take on the role of a pilot fighting in a war for humanity's survival against a powerful alien race. The game features fast-paced space combat with various ships and weapons to use. The story-driven campaign takes players through intense battles and epic space battlescapes.

An Epic Space AdventureFree Stars: Children of Infinity is an action-adventure game inspired by the golden age of science fiction, defined by its hopeful future, wondrous technology, and a grandiose galaxy filled with eclectic stories. You are the captain of a mission to the farthest reaches of space, where you'll discover thousands of exotic worlds and dozens of alien denizens. Some are friendl…

U.F.O is an alien resource management action game where you beam up humans using your spaceship and churn them into resources to upgrade your spaceship. In 30 days, the evil galactic warlord will complete his master weapon. Can you defeat him in time or will he bring extinction to your race?

"Space Battle Royale" is a frenetic arcade game set in space, where players must navigate unique maps and utilize five classes of weapons to survive and dominate the arena. With a variety of upgrades based on alien technology, players can build the ultimate fighting machine and engage in strategic combat. Even if defeated, players can upgrade their attributes and modify their ships for another chance at victory.

Everspace 2 is a single-player space exploration and combat game with RPG elements. Traverse a vast open universe, gather resources, upgrade your ship, and engage in high-stakes dogfights against hostile alien forces. Experience a compelling story with diverse characters, factions, and quests. The game features stunning visuals, detailed space environments, and immersive sound effects.

"Jetboard Joust" is an exhilarating arcade-style SHMUP where you wield a jetboard, master various weaponry, and battle against a horde of evil aliens threatening to abduct your babies. With a vast array of enemies, each with unique attacks, and an arsenal of upgradable weapons, players must dodge, leap, and blast their way through intense levels filled with explosions and non-stop action. Inspired by classics like Defender and Resogun, the game delivers a thrilling, bullet-filled experience emphasizing gunplay, death, and mayhem.

In "Alien Soldier," the planet Sierra is under attack by the terrorist group Scarlet, led by the ruthless Xi-Tiger, who plans to exterminate the human race. Players assume the role of Epsilon-Eagle, a former member of Scarlet seeking revenge, in a intense action-packed side-scrolling shooter game. With formidable skills and arsenal, Epsilon-Eagle battles through Scarlet's forces to reach and defeat Xi-Tiger, saving humanity from destruction.

In Shoot 1UP, players control a fleet of ships instead of a single one, with each 1UP collected adding to the armada immediately. The game features up to 30 ships on-screen at once, and weapons upgrade as more ships are collected. Local co-op play allows for up to 60 simultaneous player ships, and sacrificial bombs become more powerful with more ships. The game offers a challenging yet enjoyable manic shooting experience.

Rebel Galaxy Outlaw is a space combat action game that lets you explore a vast open world, engage in dogfights, and complete missions to upgrade your ship and gear. The game features a customizable ship, a variety of weapons, and a dynamic economy. You can also engage in illegal activities such as smuggling and piracy. The game's story follows a former outlaw who is drawn back into the world of crime and must navigate dangerous alliances and rivalries.