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newvs 24h ago · updates every minute
Last 7 days
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98% positive of 108 · Very Positive · Live from Steam
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Free on Steam. The demo has its own app, so its players are counted separately.
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!
Live data from Steam, tracked by SteamPlayerBase.
What changed on Steam for this game since we started following it: prices and sales, builds, name, release date and review score.
Review score: 98% on 2026-11-01 → 98% today (108 reviews)
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Not tested by Valve yet. Results from Valve's own testing.
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1 item on Steam, newest first.
Every build released on Steam for this game since we started tracking it, with the developer's patch notes. Updated within minutes of each new build.
Changed: Windows, Mac, Linux (3 downloads)
Patch notesPatch 2.1.1 - Whale Event level nerfs + Balance Changes
Older Version
If you encounter any bugs while playing, please report them to me on Discord! ------------------------------------------------------------------- Misc ChangesAdded a Discord Webhook that lets you post your Custom Level on Discord after publishing The "Share" b…
Operation Octo turns 1 year old today! To celebrate, we are launching the 2.0 Major Update - Introducing the Level Editor! Create insane shenanigans and share them with your friends on the OO Steam Workshop! There are already lots of ultra-creative levels crea…
I said last night's patch was gonna be the last one before the 2.0 update. Of course another new (and totally game-breaking) bug got discovered 😬 I'm not gonna say this will be the last patch before the major update, so I don't jynx it 😏 If you encounter any…
More bugs surfaced surrounding custom levels - This should be the last round of bug fixes before the 2.0 major update (for the Level Editor) in a month! If you encounter any bugs while playing, please report them to me on Discord! -----------------------------…
Quick patch because apparently, this could happen: I was too good to ever fail at my own levels, and hence could never have found out about this 😎I'm surprised the new custom level loading system has given no issues other than this one - Enjoy the event y'all…
Quick round of fixes. Don't mind the new "CustomLevel" folder in your save location - The Level Editor is finally WIP 😬 If you encounter any bugs while playing, please report them to me on Discord! -------------------------------------------------------------…
New Turret - Whale Artillery Introducing the first manually-controlled turret, the Whale Artillery! Whale Artillery will be unlocked inside Volcanic Ridge (which would probably release in 2057) - This is your first early access to Volcanic Ridge content! If yo…
The Operation Octo 2.0 major update (with Level Editor & Steam Workshop support) is sssstill a work-in-progress... I'm hoping to release it next month, but you know how dependable I am when it comes to deadlines 😬 Meanwhile, the Steam Ocean Festival is kickin…
Limited Time Event!(Edit from the future: Yes, this was an April Fools joke) Be among the first to try out our brand new gimmick - Turret Fusion! Everybody loves fusions. Fusions are cool as heck. What do you get when you combine an Everywhere Eel with a Siren…
New Gadget - Axe-o-lotl Based on ideas by Silviu Offtopic (The Romanian OO translator), the Axolotl gadget is ready for her rampage! Axe-o-lotl hops onto Dr. Odin, then swings her axe-shaped gills around, slashing the skeletons around you in four different dir…
Buckle up, Turbo - This is a pretty big round of updates, with lots of new things to play around with, and even Steam Leaderboards to compete in! If you encounter any bugs while playing, please report them to me on Discord! ------------------------------------…
New Turret - Everywhere Eel! Behold the Garden Eel turret designed by the PvZ YouTuber Creeps20! (Yes, Creeps voice acted for it too) Everywhere Eels randomly teleport themselves all over the map, and shoot bubbles at skeletons. They get scared away when appro…
The Soundtrack is Here!The 🎵Operation Octo OST🎶 is finally available for streaming / purchase! 🔵 You can buy the OST on Steam, which contains high-quality & loopable versions of each track for download! (ft. Volcanic Ridge theme sneak peek?!) 🔴 Click here …
Welcome to the first content update for OO! Romanian LocalizationOO has been translated into Romanian by Silviu Offtopic - The creator of PvZ Romania! I gave Silviu a lot of creative liberty with the translations, so this Romanian localization is a heck of an …
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