Top similar games like Knockback: The Awakening:
Knockback: The Awakening $4.99
Fight against hordes of zombies in this physics-based co-op game loaded with humor, and loads of customizable weapons.
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Jelly Brawl: ClassicFREE
Jelly Brawl: Classic is a FREE sticky and destructive multiplayer party game where you gotta jiggle, flop, and pop your way to the top! Fight alone or against friends for freedom from a mad king across tons of stages, mini games, and modes as you wrestle to be the last jelly standing!

Only False$5.99
Only False is a party game that blends bluffing and strategy, spiced up with a dash of dark humor. In Only False, a game for those who can’t get enough lies, you’ll sometimes lie like a politician, and sometimes think as strategically as Sun Tzu.

Run Tekila Run!$5.99
Get ready for a fast-paced, magical combat/comedy game battling fearsome zombie hordes!

Serious Sam 2$9.99
Serious Sam 2 is a shot of adrenaline to the hearts of first-person shooter fans across the world. This is serious!

Dead Matter$19.99
After a rampant viral outbreak causes global society to collapse, you must survive the harsh wilderness of the Canadian Rockies amidst vast hordes of Infected and rival survivors.

Villagers and HeroesFREE
Enter a magical, 3D fantasy world filled with hundreds of unique locales, immersive lore, and exciting quests -- and it's all free to play. Join thousands of players from around the world, and be part of a one of a kind community.

Sker Ritual$24.99
An intense round-based zombie survival FPS, play solo or co-op. Shoot your way through relentless waves of vicious horrors with high-octane objectives, upgrading steampunk weapons, collecting Celtic God powers, and surviving the onslaught of the Quiet Ones.

Just Act NaturalFREE
Just Act Natural is a hand-crafted online party game where players must hide among NPC characters to avoid detection from the seeker. Compete against your friends in a variety of game modes over a course of different rounds to be crowned the winner!

Skyward Extraction$9.99
A light horror roguelike adventure through a post apocalyptic world, with airships.

ZIC – Zombies in City$4.99
Control a team of 4 characters, switching between them to use their unique abilities. ZIC: Zombies In City is a first person zombie survival shooter.

UnturnedFREE
You're a survivor in the zombie infested ruins of society, and must work with your friends and forge alliances to remain among the living.

Dumb As Wizards$9.99
Magical madness for 1-4 players on the couch and online. Whale on your frenemies with crazy spells in a shrinking arena and be the last dummy standing! Embrace the chaos in this fun-for-all wizard brawler. You're a wizard, Dummy!

Zombie Panic! SourceFREE
Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.

Yet Another Zombie DefenseFREE
Darkness is coming. How long can YOU survive? Build your base by day, defend it by night. Play in online or local co-op. Stay alive as long as you can.

Arizona Sunshine®$19.99
Built exclusively for VR, Arizona Sunshine® puts you and up to 3 fellow survivors in the midst of a zombie apocalypse. Survive solo or in co-op, handle weapons with real-life movements, and explore a post-apocalyptic world in VR. Putting the undead back to rest is more thrilling than ever before.

BrainBread 2FREE
Grab a weapon, demolish your enemies, level up, become more powerful, let the gore flow, let the limbs fly. BrainBread 2 introduces a zombie fps mixed with RPG / Arcade elements, the game is very action-packed and generally fast-paced.

Masked Forces: Zombie Survival$0.99
What will you do when the zombie apocalypse comes, are you ready to tackle it right now and stay face to face with all the horrors that will appear?

CS2DFREE
CS2D is a free fast-paced top-down multiplayer shooter. Featuring many different game modes, a built-in map editor and much more.

Masked Forces 3$4.99
Welcome to Masked Forces 3, the ultimate FPS simulation! This is a game where you can test and improve your shooting capabilities against multiple game modes.

SPY RUMBLEFREE
Armed Citizens Strike Back! New sensation action wargame SPY RUMBLE!

GUNWATCH: Conflict SurvivalFREE
1-16 Player COMBAT ZONE & 1-4 Player COOP Zombie Wave Survival in Comic style. Singleplayer and Multiplayer Playthrough. Get ready for GUNWATCH: Conflict Survival!

Bad Egg$3.99
One egg stands alone vs an army of zombie chickens! Get to the chopper or you're clucked. A free-range frenzy from the eggheads behind Shell Shockers, Slayaway Camp and Plants vs Zombies.

Stack Up! (or dive trying)$6.99
Stack Up! (or dive trying) is a stack-your-way-up platformer. The objective is simple: get as high as you can. Avoid contact with water at all costs, be swift with your movements and build yourself a makeshift staircase to the top with the objects falling around you.

Dorfs: Hammers for Hire$8.99
A co-op crafting platformer where your friends prove worse than any enemy. Craft weapons and armor from your dwarven workshop, help your patron's army win the battle, and make your way up the Iron Mountain!

Combat Beans: Total Mayhem$1.99
Battle in frantic third person arena-based combat. Customize your bean with unique cosmetics and bully your buddies across multiple game modes.

ZaBaTa!FREE
ZaBaTa! is an online multiplayer game where you must find human players hidden among AI NPCs. Blend in, complete missions, and most importantly - don't get caught! Play ZaBaTa! with friends for even more fun.

NecroBoy : Path to Evilship$9.99
NecroBoy : Path to Evilship tells the story of a young necromancer aiming to become the greatest Lord of Evil! Using his dark powers, he’s bringing his NecroMinions back to life to do his bidding and solve puzzles to venture forth into the crypt of his infamous hero, NecroMan!

Feather Party$4.99
Welcome to the fantastic party on the adorable planet of chicks! Feather Party is a multiplayer party game for up to 8 players. Engage in a diverse array of fun mini-games with friends or against rivals to be the winner of this party!

Ace Squared$4.99
Ace Squared is a multiplayer arena first-person shooter. You can build huge structures and dig tunnels behind enemy lines. Imagination is the only limit. Featuring 32-player servers, different classes and gamemodes.

Orcs Must Die!$9.99
Slice them, burn them, skewer them, and launch them - no matter how you get it done, orcs must die in this fantasy action-strategy game from Robot Entertainment.

Orcs Must Die! 2$14.99
You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment.

UnEpic$12.99
Daniel was just an average guy. He was a great videogame player, a big fan of sci-fi movies, and a novice RPG player. In the midst of an RPG, he was teleported to a castle. At first, Daniel believed that he was having a massive hallucination.

AngeldustFREE
ADVENTURE. ANYWHERE! Explore endless magical worlds and battle fearsome creatures alongside millions of friends. Ride your own horse, bear or moa and discover the many game world wonders. Unleash your imagination by crafting beautiful buildings.

Witch It$19.99
Witch It is a multiplayer hide & seek game set in a vibrant, magical world. Brave hunters seek hidden witches that curse their villages!

Last Hopeless$5.99
Killis hundreds of zombie and get new reinforcement items for survivng. choose your best item set and upgrade them to get hidden skill. Last Hopeless is a rogue-like game with some physics feed back, you can play with gun, hammer, kitchen knife and other hundreds of items to survival longer.

Survivor$0.99
Get ready for an intense survival battle against an ever-growing horde of zombies. Play solo or co-op with friends, test your shooting skills and luck in this relentless combat and see how long you can stay alive.

Garry's Mod$9.99
Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.

Screencheat$14.99
Screencheat is a ridiculous competitive split-screen first-person shooter where everyone is invisible, so players are forced to look at each other’s screens to win. Supporting both local and online multiplayer, combat in Screencheat is fast and furious with a wide variety of one-hit kill weapons.

MidairFREE
Midair is a fast-paced jetpack shooter set in a breathtaking new sci-fi universe. Use movement to your advantage, outwit your enemy from every angle, build defenses, and fully customize the way you play. Break the mold of traditional shooters and jetpack your way into a challenging new experience!

Guts and Glory$14.99
A game about father and son riding their bicycle through obstacle courses of death, and other fun family experiences. Created by HakJak

Toon Shooters 2: The Freelancers$1.99
Blast your way across the galaxy in a classic inspired arcade side-scrolling shooter!

Stayin' Alive$5.99
Do your best to die or save your enemies from death in this frantic team multiplayer game about health issues. Death is in the air.

ShellShock Live$9.99
Demolish your friends with hundreds of upgradable weapons shot from your customizable tank in this action-packed online multiplayer tanks game. Earn XP to level up and unlock new tanks, weapons, and gear. Fight against or alongside your friends for strategic team or free-for-all matches.

Who's Your Daddy?!$6.99
Who's Your Daddy is a casual multiplayer game featuring a clueless father attempting to prevent his infant son from certain death. Play with up to 7 of your friends, and test your parenting skills in a competitive setup with wacky physics and over 69 potentially ominous household items.

Pavlov$24.99
Pavlov vr is a multiplayer shooter in VR with heavy focus on community features. Realistic reloading features and fast paced combat as part of the core experience. Play the #1 most popular VR shooter on PC today.

Puropu Defense Squad$9.99
Defend your world as sentient Props in Puropu Defense Squad! Build, upgrade, and evolve your heroes to crush waves of filthy humans worldwide. Dive into a unique mix of third-person action and tower defense—solo or with friends—in an endlessly replayable co-op campaign!

Serious Sam HD: The Second Encounter$19.99
Serious Sam HD: The Second Encounter is a visually upgraded and fully Steam supported remake of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month!

Serious Sam 3: BFE$29.99
Serious Sam 3: BFE is a prequel to the original indie fast action FPS and Game of the Year sensation - Serious Sam: The First Encounter!

Sanctum 2$14.99
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.

CastleStorm$9.99
Welcome to the world of CastleStorm, a super genre mashup of 2D physics destruction mashed with tower defense brawler! CastleStorm was born out of the fond childhood memory of building and destroying LEGO castles.

Dead Effect 2$11.99
Dead Effect 2 is the newest addition to the acclaimed Dead Effect franchise. This action sci-fi shooter is looking to push the boundaries of first-person shooters to new levels with slick graphics, rich narrative and RPG elements.