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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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.

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!

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

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.

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.

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!

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.

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!

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!

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!

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.

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.

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.

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.

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.

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!

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.

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

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

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.

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?

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!

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.

Monsters sandbox$0.99
Multiplayer game with the ability to connect via LAN or Internet. Fight monsters alone or with friends. Find weapons and ammunition during the game or buy them in the store. Different game modes.

Private Property$12.99
Private Property - the brand new VR zombie shooter set at the end of the XIX century Montana provides endless hours of great fun! This coop multiplayer allows players to team up to jointly defend the Private Property from hordes of Zombies.

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!

Skeleton HellFREE
Skeleton Hell is a cooperative horror game where you and your friends must work together to find your missing organs and reclaim your humanity. Using your skeletal form, you can solve puzzles and collaborate with each other to escape, while avoiding the dangers that lurk within!

Crunch Element$19.99
Raid destructible compounds using explosive gadgets and tactical weaponry! Hone your CQB skills in constantly changing compound layouts and blast open entry points with explosives to get the perfect shot. Team up with your squad or take on the challenge as a lone wolf!

Snowballs$0.99
It is a very funny, fast and easy game which can be played by adults as well as children.

Kill It With Fire 2$14.99
Arachnophobia. The Game. The Sequel. Take on the arachnid menace alone or with friends in full campaign co-op. Wage the arachnid war across time and space and exterminate every last spider across the multiverse, or jump into Spider Hunt PvP and play as the eight-legged menace for the first time!

Hunt-or-Haunt$4.99
Hunt-or-Haunt is a 6 to 12 player online game where two teams, Hunters and Haunts, face-off in pandemonius battles of elimination! As Hunters combine forces to uncover and dispatch their ghostly foes, Haunts use their stealth and trickery to divide and conquer. Eliminate your opponents to win!

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!

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.

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.

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.

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!

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.

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!

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.

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!

Dungeon Renovation Simulator$4.99
Physics-based dungeon cleaning, in a medieval setting. Play as a Goblin cleaner, dive into messy dungeons, clean up, find loot, and become the ultimate dungeon master!

RoundRunners Playground$4.99
Play tag-like gamemodes with a chance of random effects to happen. Roll, climb and bunnyhop to dodge fellow roundrunners as you’re trying not to get tagged. Face up against your friends or randoms in this easy-to-pick-up game. Make the map your playground.

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.

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.

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.

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.