Top similar games like Rival Rampage:

Face the varied challenges of the Machine God Zir in ARENA, a standalone expansion for Synthetik: Legion Rising! Leverage the next level in gun-play and experiment with powerful tech in varied action packed Arenas!

Retro style 2D vertical scrolling simple shooter.

Exit the Gungeon is a small, spin-off 'dungeon climber' immediately following the adventures of the misfit Gungeoneers.

THE legendary free online multiplayer space shooter! Addictive, fast-paced, easy to learn, and impossible to master.

Thunderflash is a "love letter" to the arcade games of the 80s. It is a Run 'n Gun game inspired by gems like Ikari Warriors, Commando and Heavy Barrel.

Unleash the apex worm in you! Join a world where you eat to grow and aim to become the largest worm around. Dodge viruses, cut off enemy paths, and indulge in addictive multiplayer action. Custom skins, game modes, and more await!

The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.

Two trainee heroes, one ice cream-covered island, and a demon problem gone very, very wrong. Explore, fight, craft, and survive—or fade forever into The Ann-Onymity.

Variator is a new 2.5D shoot 'em up that's all about blowing up enemies and grazing bullets! Playable both as a fun blaster and as an advanced high-scoring game, the game features approachable difficulty and scoring mechanics that are easy to understand yet reveal more depth the more you play.

Engage in an intense space shooter that you can play in single-player or multiplayer with up to 6 players. Play a variety of different spaceships, each with their own unique stats, components, and playstyles!

The Last Archwing is a fast paced, vertically scrolling space shooter. Will you and your friends take up the mantle as Earth's last defenders and thwart the plans of the evil Emperor Zarkhan?

Vlambeer's SUPER CRATE BOX is coming to bring back the glory of the golden arcade age, when all that really mattered was getting on that high score list. Grab your baseball cap and loosen your pants, it's time to fight endless hordes of enemies and collect every weapon crate you can.

Space Waver is an action-adventure-shooter space game, with a strong bind to comics. Become a space mercenary and experience his life through multiple contracts.

This game is a tribute to the Run "N Gun games (Commando, Ikari Warrior, Heavy Barrel, Guerilla Wars, Mercs...) from the mid 1980's that you could find in arcades or on 16 bit consoles.

Take control of Tess, a bunny girl who uses her huge hammer to send enemies flying into other enemies in this top-down bump combat action game! Dodge projectiles, control space and outmaneuver bosses in Arcade mode or explore dungeons, solve puzzles and unlock abilities in Adventure mode.

Food Fight! Fight with food! Collect food items and combine them into weapons and armor for the most delicious battle yet!

Survive as long as you can in an endless bullet hell with randomized stats and weapons.

George and Ken, two college students working a summer job, are forced to fend off an evil army of weeds attacking their township. Use common yard tools such as Weed Wackers, Lawn Mowers, and Axes to fight off dozens of weeds all while being forced to perform mundane work tasks by their boss. 

Galactic Wars EX is a pixel perfect co-op retro arcade shmup retrogaming experience for modern pcs

Embark on an epic fruit-filled adventure as Jack the Apple, battling brainwashed banana soldiers in this top-down 2D pixel shooter to stop Dr. Banana's evil plans!

Who are you fighting for? My usual job turns into a big mission. An easy-to-understand system reminiscent of the old barrage STG. Pave the way with powerful PowerShots!

A co-op underground cave mining driving adventure where you and your friends drive, dig, and descend into the depths of a treacherous underground world. Upgrade your equipment and drill vehicle as you make your way down to find the mystery at the core of the planet.

Explore a mysterious 2.5D island and fight to survive solo or in up to 4-player online co-op. Gather and manage resources, uncover secrets, and face the dangers. Lightweight and low-spec friendly.

Calturin and Clone is a 2D co-op action RPG where you can either play as a lone adventurer or with a fellow wizard. Mainly focused on difficult boss fights and other challenging encounters that are not combat, Calturin and Clone will test you and your friend's skills to the limit.

In this arcade-style top-down shooter, originally released in 1988 for the Commodore Amiga, take on the role of members of a 4-man squad fighting through a treacherous jungle environment. Play with up to 4 player local co-op.

Grab your best friend and embark on a co-op journey through the lustrous universe of Grapplers. We have hooks, spaceships and lots of fun challenges to overcome.

Zolg is a minimalist top-down shooter where you explore, fight enemies, collect powerups, and defeat bosses.

The Saikyo-style system, trusted by players from casual gamers to hardcore enthusiasts, now features a new three-stage charge shot enhancement system, significantly boosting strategic depth. If you haven't played it yet, we urge you to give it a try.

The second installment in Saikyo's vertical scrolling shooters, following the 1993 Best Shooting Game award winner “Sengoku Ace”.

RetroArch is an open source and cross platform frontend/framework for emulators, game engines, video games, media players and other applications

Co-operative multiplayer game and complete code base available for free.

HollowCity is a top-down extraction shooter where you venture out from your safehouse to explore and scavenge for loot. Seize spoils from hostile enemies, rescue allies to upgrade your base, and find your way out of the devastated city.