A downloadable game for Windows and Linux

Buy Now$1.99 USD or more

You're trapped deep within the toxic sewers. It's a dangerous place and you have to think quickly in order to survive.

Grab all of the keys in a level to open the door to freedom... or at least the next level.

The Count and Countess have sent their minions and set up traps to stop you. You are defenseless and one touch is fatal. Good luck with that!

View Toxic Terror on Steam.


Episode 2: The Lich's Lair


Arrow keys move your character.

The ESCape key brings up the in-game menu.

Controller support was added in version 1.1.


The demo contains the first three levels of the full game.


Windows System Requirements

  • OS: Windows XP SP3 or better
  • Graphics: Open GL 2.0 compatible or better
  • DirectX: Version 9.0c
  • DirectX End-User Runtimes (June 2010) – The necessary files are included in the install process.

Linux System Requirements

  • OS: Ubuntu 14.04 (May work on others)
  • Graphics: Open GL 2.0 compatible or better
  • Depends: libopenal1, libavcodec54, libavformat54, libcurl3


Game design, programming, and music composition by Adam Biser.

Sounds created by Adam Biser using Bfxr by Stephen Lavelle.

Ghost, Key, Slime ball, Slime ripples © 2016 Adam Biser

Graphics Resources Used

Old School Modern © Jason Perry

Old School Modern 2 © 2014 Jason Perry

Evil Transforming Vampire © Jason Perry

Toxic Sewer © 2015 Richard Marks

Created using AppGameKit 2.


Version 1.4 (2016-12-16)

  • Compiled with AGK 2.0.22.
  • Music now uses OGG files.
  • Added DLC episode support.
  • File structure changed.

Version 1.3

  • Compiled with AGK 2.0.19.
  • The game now pauses when it loses focus.
  • Added fullscreen/windowed mode toggling.

Version 1.2 (2016-05-13)

  • Changed ghost graphics.
  • Fixed bug so that ghost can appear from any direction.
  • Added Linux (Ubuntu 14.04) support.

Version 1.1 (2016-04-29)

  • Added controller support.

Version 1.0 (2016-04-24)

  • Initial full release.

Version 0.1 (2016-01-31)

  • Alpha demo.
PlatformsWindows, Linux
Release date Apr 25, 2016
Rated 3.0 out of 5 stars
(2 total ratings)
Made withAppGameKit
Tags2D, 8-Bit, Casual, Cute, Pixel Art, Retro, Top-Down
Average sessionA few minutes
InputsKeyboard, Gamepad (any)
LinksSteam, Homepage, Twitter


Buy Now$1.99 USD or more

In order to download this game you must purchase it at or above the minimum price of $1.99 USD. Your purchase comes with a Steam key. You will get access to the following files:

Toxic Terror-1.4-setup.exe 8 MB
toxicterror_1.4-3_i386.deb 8 MB
toxicterror_1.4-3_amd64.deb 8 MB
Toxic Terror Soundtrack (FLAC).zip 45 MB

Download demo

Toxic Terror Demo-1.4-setup.exe 8 MB
toxicterrordemo_1.4-3_i386.deb 8 MB
toxicterrordemo_1.4-3_amd64.deb 8 MB


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steam key?

Those who purchase or have purchased the game through this site will get a key here. Those who got the game through Groupees Build a Greenlight Bundle 44 will get their key through Groupees.

Where on this site might one go about locating said key¿?

I believe they are found on your my purchases page. You might have to click the "download" button in order to open up the game information. None of my purchases here have keys, so I don't know this for certain.

If the purchase was part of Groupees Build a Greenlight Bundle 44, the key will be found on that site not this one. If you got an itch.io key for the game via trade, ask the person to give you their Steam key as well.