Games like Droid Assault

"Ultratron is a sci-fi shooter game with classic arcade gameplay, updated for the modern era. Fight through 40+ levels as the last humanoid battle droid, with upgrades, pet drones, and special abilities. Play in single-player mode or drop-in two-player co-op, with support for English and five other languages."

"Enemy Mind" is a side-scrolling space shooter for PC with a classic 8-bit art style and 8 levels of challenge across 70 waves. As a being of pure psychic energy, you can take over and control any of the 20+ unique ships you encounter, each with their own power and ability. The game features an adaptive story system that changes with your play style and offers multi-player co-op for up to four players. The soundtrack is an original chiptune-inspired creation by Rainbow Kitten.

"Titan Attacks!" is a classic arcade-style shoot 'em up game with modern features. Protect your planet from hordes of invading aliens, using a variety of upgradable weapons and power-ups. Experience the thrill of survival as you battle through increasingly difficult levels, with boss fights at the end of each stage. The game features retro pixel art graphics and a chiptune soundtrack that heightens the nostalgic feel.

Nex Machina is a modern, cablepunk-themed twin-stick shooter by Housemarque, where you must save humans from robot overlords through intense arcade-style action. With destruction powered by voxel technology and inspired by classics like Robotron, blast your way through waves of machines and compete for high scores. The fate of humanity rests in your shooter skills – can you rise to the challenge?

"Bleed" is a shooter game that challenges players to take down heroes in action-packed levels. The game features 7 levels with bosses, set-pieces, and four difficulty options. It has a unique control scheme, supports local co-op for up to 2 players, and offers additional characters and game modes to unlock.

Assault Android Cactus is a vibrant, arcade-style shooter where players control android heroes fighting against waves of robotic enemies. With a variety of distinctive characters, each with unique weapons and abilities, the game offers a dynamic and engaging experience. The game features a campaign mode with high replay value, as well as local co-op for up to four players, making it a great choice for fans of frantic, action-packed gameplay.

"Fury Unleashed" is a roguelike action platformer set in a comic book universe. Play as a skilled warrior on a quest to create the perfect comic, battling through procedurally generated levels and epic boss fights. Upgrade your character, arsenal, and skills to unleash your full potential and leave a trail of ink in your wake.

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.

In "Blazing Chrome," players battle through a dystopian world overrun by machines, choosing between a human resistance fighter or a reprogrammed robot. The game offers tight side-scrolling shooter action with a variety of weapons and abilities, as well as local co-op play. With hand-drawn graphics and challenging gameplay, Blazing Chrome is a love letter to classic run-and-gun games.

"Bit Blaster XL" is a fast-paced, arcade-style score-chaser game where you control a ship that cannot stop moving. Avoid crashing into enemies by turning left and right, and use boost/brake to navigate through an ever-increasing amount of obstacles. Collect ammo and power-ups to survive longer and beat your high score. The game features simple mechanics, re-playability, and extra ships to unlock.