Operation Octo artwork$6.9998%Very Positive

Operation Octo

Play as an Octopus scientist fighting off sunken skeletons in this frantic aquatic Tower Defense! Discover sea life turrets from unique biomes: Pistol Shrimp! Navy Seal! Death Ray! Deploy turrets whilst dodging enemy bullets as you venture the seven seas!

Screenshots

From the Steam store

Dr. Odin, an octopus scientist, has teamed up with his Dolphin colleague to put a stop to underwater skeletons’ reign of terror!

In this action Tower Defense game, you fend off hordes of skeletons by strategically placing sea creature turrets. Beware that as your line of defense falls, this quickly turns into a game of survival where you dodge around for dear life!

The game currently has 7-9 hours of playtime across 3 unique biomes, with more biomes to be added via free updates!

Features

Unlock Turrets: Your arsenal is filled with mechanized sea lives! Those cool inventions (such as Pistol Shrimp, Navy Seal, and Death Ray) will handle the fight. You’ll discover new turret types one after another - Figure out how best to utilize each of ‘em!

Skeleton Enemies: Did you know that most humans who ever lived are dead? Tons of skeletons end up in the ocean, and are terrorizing local ecosystems. Fight sword-swinging pirates, poison-wielding chemists, and even skeletal dragons… Those skeletons are sure to shake up your playstyle at every turn!

Unique Biomes: As you adventure the seven seas, you’ll add more creatures into your turret collection, and face new and exciting dangers. Adapting to changing environments is key to survival: Don’t misstep into a toxic brine pool, or forget your light in the darkness of the deep sea.

Turret Upgrades: Skeletons will sometimes drop a variety of Elixirs. Use them to boost turrets into different forms! Will you turn a turret into a frosty ice machine, a powerful mutant, or a shadowy stealth weapon?

Boss Fights: Special levels featuring larger-than-life boss enemies with formidable abilities!

Awesome Upbeat Soundtrack: Seriously, the composers are amazing

Mostly created by one person, while doing college

“The ocean awaits us to reclaim - Let the Operation Octo commence!” - a message from Dr. Finn the Dolphin (who really needs your help because he’s too lazy to do the work himself)

Games like Operation Octo

See all
Octogeddon

Octogeddon

Spin a giant mutant octopus through cities, arming each tentacle with a different animal weapon as you go.

92% of 1,317 Steam reviews are positivePlayers online now: 15$8.88
No Creeps Were Harmed TD

No Creeps Were Harmed TD

Employ lethal turrets, traps, and gadgets to defend against an onslaught of evolving creeps! Step into a twisted, hyper 3D, mind bending realm.

89% of 473 Steam reviews are positive$19.99
PixelJunk™ Monsters Ultimate

PixelJunk™ Monsters Ultimate

Sprint between your defenses, grow them with a dance, and keep the monsters away from your babies, alone or with a friend.

87% of 662 Steam reviews are positivePlayers online now: 16$9.99
Cluckmech Oasis

Cluckmech Oasis

Lead a squad of animal heroes against rude plants, mixing shooting with tower defense in fast, colorful runs that never play out the same way twice.

87% of 3,101 Steam reviews are positivePlayers online now: 93$9.99
Minimalist Tower Defense

Minimalist Tower Defense

Build your defenses by day, then survive waves of enemies through the night in a clean, tense strategy game that is harder than it looks.

94% of 1,872 Steam reviews are positivePlayers online now: 12$4.99
Sir, We Have an Orc Problem

Sir, We Have an Orc Problem

Hold the line against endless orc waves, then spend every win and loss on upgrades that make the next defense easier.

86% of 4,873 Steam reviews are positivePlayers online now: 507$9.99
Fort Defense

Fort Defense

All hands on deck! Pirate armada dead ahead! Take part in an uncompromising struggle repelling freebooters' assaults.

78% of 231 Steam reviews are positive$1.49
2112TD: Tower Defense Survival

2112TD: Tower Defense Survival

Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi…

87% of 433 Steam reviews are positivePlayers online now: 2$4.79
Bean Beasts

Bean Beasts

Defeat monster hordes alongside your Bean Beasts in this cute, challenging Tower Defense Game!

89% of 113 Steam reviews are positive$13.99
TDS - Tower Defense Strategy

TDS - Tower Defense Strategy

TOWER ▪ DEFENSE ▪ STRATEGY. Control Vessels. Utilize their uniquely deep set of towers. Create an everchanging defense. Play with friends.

81% of 322 Steam reviews are positivePlayers online now: 4$17.99
Citywars Tower Defense

Citywars Tower Defense

Defend the Crystal in fast third-person battles, build and craft between waves, and team up with friends when the monsters get serious.

79% of 1,127 Steam reviews are positivePlayers online now: 4Free
Rift Riff

Rift Riff

Jump a rift, fight off monsters, plunder their world. A strategic mix of juicy tower loadouts, varied monster behaviors, and forgiving mechanics.

94% of 370 Steam reviews are positive$12.99