Operation Octo

Operation Octo

Klub Kofta Studio · 2025 · Tower Defense, Strategy, Underwater, Survival, Cute

PC
Very Positive99% · 97
Best price
$6.99
lowest tracked $4.19
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Steam
Steam
Standard Edition · Steam
$6.99
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Screenshots

About Operation Octo


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)

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Jul 5, 2026
My best friend had me get this game because he said it was "Like Plants vs Zombies Adventures if it was a good game and took all of its potential and fleshed out while removing all of its flaws!". And basically yeah, he was right. I couldn't put it any better myself. This game is GREAT! A fun successor to PvZA for someone who grew up on that game. I know it's not ACTUAL PvZ (counting fan stuff for this because PopCap is... yeah...) but if I'm counting it, this is probably my favorite PvZ game I've ever played. I genuinely implore anyone else who played that game growing up to try this game out. It's criminally underrated and needs the love. The creator is a PvZ fan and you can tell their art was filled with love while making this game. Like always, PvZ fans do better than PopCap themselves. PopCap themselves are out there using AI for ♥♥♥♥ and the fans are making stuff like THIS! Play it.
2 found this helpful
Recommended Jun 21, 2026
Amazingly chaotic
1 found this helpful
Recommended Jun 19, 2026
a very lovely love letter to pvz!! i could really tell that a lot of effort was put into this game the game offers a lot of unique ideas i havent seen in a tower defense game before, the player having to defend themselves instead of a static base leads to really fun gameplay and stops the game from feeling stale, the 3 worlds right now feels distinct (even if world 2, 3 and probably 4 all share the same hazard), having to actively pick up things instead of just moving your mouse over them is fun the conveyor belt is a fun and interesting idea for a tower defense game, it leads to actual strategy on what tower you want in what slot which is nice the artstyle is really distinct, just like pvz all the towers are recognizable and their function can be identified at a glance all towers having upgrades that change how they function lead to more strategy on what potion to give to what tower some minor complaints are that the later levels of world 3 get really spam heavy, not helped with the wonky audio mixing leading to some levels feeling a bit overwhelming with the amount of things going on, while there are towers that help with getting more pearls you cant place down clams yoursel…
1 found this helpful
Recommended May 23, 2026
Such a fun TD and the art of various potions are so cool
1 found this helpful
Recommended Jul 9, 2026
Very fun game. The core gameplay is top-notch. Nothing is left unclear to the player; tutorials are well made and natural. At times the gameplay feels hectic, but every part can be mastered by the one who is committed to it. My one worry is that the addition of new towers and areas may end up bloating the game, but it will still be fun either way. The music and graphics are really cool and I'm generally a fan of ocean aesthetics; however, the sound design has some flaws and may bother some players. P.S.: If you are a pro, turn on the two "no-healing" challenge settings in the options. P.P.S.: If you are not a pro, but are annoyed by barely hanging on til the end of a level...also do that. :)
Recommended Jun 18, 2026
this is just pvz but a little more complicated, pretty good tbh

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