A downloadable game for Windows and Linux

Buy Now$3.49 USD or more

Kobo Redux is a frantic 80's style 2D shooter, inspired by the look and feel of 90's arcade cabinets. The gameplay is fast and unforgiving, although with less of the frustrating quirkiness of the actual games of the 80's. A true challenge in the spirit of the arcade era!

First, inspired by Bosconian, there was XKobo, a multi-directional scrolling arcade shooter, where the primary objective was to destroy maze-like hostile space bases, while they were hurling bullets, missiles, and ships in your general direction.

Kobo Deluxe brought this addictive little game to basically everything with a CPU, and has had incredible numbers of downloads on various platforms. It is also included in many Linux distros. However, the project was never quite finished, and the game mostly served as a test bed for other little projects, such as glSDL, and the unnamed sound engine - a precursor of Audiality 2.

Now, with smoother controls, improved gameplay, a bit of physics, new pixel art, and a proper soundtrack, Kobo Redux aims to be the XKobo update that Kobo Deluxe never quite became.

What you get when you buy Kobo Redux

  • Access to the full Redux sound and graphics themes
  • Access to binaries for the supported platforms
  • Free updates of the above, for as long as the project is maintained
  • Improved chances of updates and more games actually happening!
  • Kobo Redux has been Greenlit, so you'll also get a Steam key eventually.

What is available to everyone, under various FOSS licenses

In other words, while the Kobo Redux media is proprietary, the full game source code is available under the GNU GPL (some files are under the GNU LGPL), and relies only on portable Free/Open Source technologies, such as SDL and Audiality 2. The game is fully playable with the included non-proprietary media.

That is, it is entirely legal to fork the game code and the included free themes in order to develop different versions, or new games, as long as the original licencing terms are not violated.

If you own Kobo II...

If you've previously purchased Kobo II, you get Kobo Redux for free! You should have received an email with a download key.


Buy Now$3.49 USD or more

In order to download this game you must purchase it at or above the minimum price of $3.49 USD. You will get access to the following files:

KoboRedux- 2 MB
koboredux- 1 MB
koboredux- 1 MB
koboredux- 1 MB

Download demo

KoboRedux-Demo- 1 MB
koboredux-demo- 1 MB
koboredux-demo- 1 MB
koboredux-demo- 1 MB

Development log


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Even though it states "work in progress", it looks already polished. Gives me the feeling of a slick 80s arcade.

Interesting overall history of the game, from early 80s to this version... and for Linux in mid-90s? That's cool.

Thank you!

The 80's (or possibly early 90's) arcade feel is indeed what I'm going for, or rather, what might have happened if someone with a huge budget were to build a machine around that time. Multilayer parallax scrolling, hundreds of sprites, scaling/warping effects, lots of sound chips etc - expensive, but all technically possible with hardware available back then.

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Me, thinking I could compile and build the source, couldn't. May I have an in-depth tutorial? I have no clue what to do. Am on Windows 10.

As I don't actually build the Windows version on Windows, I can only give some rough hints here, I'm afraid. Your best bet is probably to use MinGW, as that is essentially the native version of the toolchain I use for crosscompiling. You'll also need CMake to use the existing build scripts. Once you have that installed, you'll need SDL 2.0 and SDL_image 2.0 development libraries, and dependencies, and then you'll need to build and install Audiality 2.

As for the build process, there are some hints here, although aimed at Un*x systems and similar.

Thank you, kind sir. I hope to see more from you. I loved Kobo Deluxe, and am hoping to see even better when I build Kobo Redux.

Question: Do I put the SDL 2.0 libraries and the Audiality 2 build in the same directory as the Kobo build?

Thank you! I hope you'll enjoy the new developments.

The build scripts expect both SDL2 and A2 to be properly installed in the development environment, like any other libraries - so the typical procedure  is to build and install SDL2, then build and install A2, and finally, the game.

I assume I build the c files with gcc and the c++ with g++?

Howdy, I bought Kobo 2 back in like 2012... I just bought this version too, I don't mind paying twice, but a Steam key would be great! What became of Kobo II? It was promising.

Thank you very much! Then you should get two Steam keys when the time comes. :-)

There will be another 0.7.x release, but then I'm focusing on 0.8.0 and Steam, which means new levels and upgraded enemies. The game logic code needs major refactoring, and it has legal issues. Rewriting those parts takes care of both. I'll open up Steam Early Access as soon as 0.8.x is reasonably playable.

As to Kobo II (working title), I started running out of time and resources, and I realized I'd have to strip it down to something quite generic and uninteresting to be able to finish it at the time. So, I put it on hold, replaced the contract work with a job, and started working on a smaller project: Kobo Redux, which is also much more similar to XKobo/Kobo Deluxe in feel and gameplay.

However, I've kept working on Audiality 2 (sound engine, also used in Redux) and EEL (scripting language, used for some tools for Redux; may be used for GUI and high level logic in Redux 0.8.x), and I intend to update the Kobo II tech preview, and release it with full source code in the near future.

After finishing Kobo Redux, I'll look into reviving Kobo II - probably under a different name, as it's really a different subgenre, which doesn't appeal to all Kobo fans.

Audality is awesome, I like the SFX it generates. I'm an audio guy, it'd be super cool if you made a GUI for it so people like me could play around with it's values. I'm always willing to pay for decent sound tools! It sounds like it's a flexible sound engine, I like the fact that the SFX are generated on the fly.

Thanks! A2 is a modular synth with realtime scripting (with A2S) - which at this point, is the only user interface. (Documentation in progress: https://github.com/olofson/audiality2/tree/master/doc ) The idea is to cover everything from virtual instruments through sound effects and streaming with a single architecture, in order to eliminate the traditional distinctions between these fields. A2S was never really intended as a "music language," but that's how all music for it so far has been authored. Dynamic/interactive music would seem like the obvious next step there.

Either way, I'm planning on building an interactive A2S editor with tracker capabilities, and possibly support for "instrument" GUIs for realtime tweaking. Wrapping A2 up as a VSTi for music authoring in traditional DAWs is also on the list. It has crossed my mind to do something more similar to the FMOD and Wwise authoring tools for A2, but that's a massive project, and I'm not sure I want to develop and support tools full time. But, you never know... :-)

Awesome! I added it to my Github list