Operation Octo v1.6.3 (upd.02.07.2026) - TENOKE

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Game updated on Today, 13:13. Current version: v1.6.3 (upd.02.07.2026).

4.7/ 5

Community Rating: 154 votes

About The Game

Operation Octo is a tower defense strategy action game where you control an underwater defense against ancient forces awakened in the depths of the sea. A genius octopus has constructed an army of bioturrets to stop the invasion. It's time to command the depths. Your task is to correctly place turrets and react to enemy mutations in real time. Skeletons do not just attack, they evolve and require changes in your strategy. A mistake does not cost you resources but control over an entire biome. Unlock new types of towers, combine their effects, strengthen them with elixirs. Change configurations on the fly and do not let the enemy adapt. Plan routes, protect key points and prepare to clash with sea bosses.

NOTE. Uploaded version: 2 July 2026 [v1.6.3 Build 22717692]. This is Full Release and latest version of game. The game is already Packaged in ISO File and ready to run the game, read the instruction below.

Game Details

Title: Operation Octo
Genre: Tower Defense, Strategy, Survival, Casual, Action, Adventure
Developer: Klub Kofta Studio
Publisher: Klub Kofta Studio
Release year: 2025
Available Languages: English, Arabic, Turkish, Simplified Chinese
Release Name: Operation.Octo.v1.6.3.Build.22717692-TENOKE
Game Version: v1.6.3 (upd.02.07.2026)
Game Releaser: TENOKE
Size: 537.83 MB
Steam link https://store.steampowered.com/app/2503550/
Steam Rating—

Key Features

Tactical tower defense with elements of evasion and survival.
Skeleton pirates, alchemists and dragons with unique skills.
Deep system of upgrades and mutations for turrets.
Step-by-step expansion of the arsenal, each biome opens up something new.

System Requirements

Minimum:
OS *: Windows 7 (SP1) or higher
Processor: SSE2 instruction set support
Memory: 2 GB RAM
Graphics: DX10 capabilities
DirectX: Version 10
Storage: 2 GB available space
Additional Notes: Unity 2D - Has option to disable shaders

*Starting January 1st, 2024, the Steam Client will only support Windows 10 and later versions.

Screenshots

How to Install

1. The first thing we do is download the game’s installation files.
2. Unzip the archive to the hard disk.
3. Mount or burn the ISO image in the disk emulator (UltraISO program).
4. After mount ISO, go to the folder and run the file «setup.exe».
5. During the installation, we specify the location on the disk where we want to install it.
6. Copy the contents of the folder «CRACK» in the folder with the game.
7. At the end of the unpacking process, a shortcut appears on the desktop.
8. Launch the game!