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Cosmo Knight ZiON

Work in progress... 


  • Botón A: (Z) - Jump/Salto
  • Botón B: (X) - Attack/Ataque
  • Botón START (Enter) -Pause/Pausa
  • Botón Select: (Shift derecho) - None/sin uso


This is a project that aims to turn my previous GameBoy Color fangame, Saint Seiya - The Phoenix Returns, into a completely new game, completely removing the intellectual property it was based on.

The project involves significant changes in the story to create an original plot, as well as improvements to the game engine, the addition of new elements and improvements to the controls, changes in the levels, characters and enemies, and modifications to the music. Although the project is still in its early stages of development, I hope to work on it until it becomes a completely new and complete game.

Project credits: 

Programming: Zeichi GamePlay Short
Character design: NiO107
Music: Beatscribe

.:: ESPAÑOL ::.

Este es un proyecto que busca transformar mi anterior fangame de GameBoy Color, Saint Seiya - The Phoenix Returns, en un juego completamente nuevo, eliminando por completo la propiedad intelectual en la que se basa.

El proyecto contempla:

Cambios significativos en la historia para crear una trama original, así como mejoras en el motor del juego, la adición de nuevos elementos y mejoras en el control, cambios en los niveles, personajes y enemigos, y modificaciones en la música. Aunque el proyecto aún se encuentra en una etapa temprana de desarrollo, espero trabajar en él hasta convertirlo en un juego completamente nuevo y completo.

Créditos del Proyecto.

Programacion: Zeichi GamePlay Short 
Diseño de Personajes: NiO107
Música de: Beatscribe

..:::  UPDATES :::..



Demo update

  • Fixed some bugs
  • Changed elements
  • Updated game engine


The first demo has been released. Try out this new adventure and share your feedback.

  • The game engine is 90% complete, but there are still some features to be implemented.
  • There is a new set of levels.
  • The first cutscene has been partially implemented. The game will use multiple cutscenes to tell the main storyline.
  • The great soundtrack composed by Beatscribe.



Demostración actualizada

  • Se resuelven algunos bugs
  • Se cambiaron elementos
  • Se actualizo el motor del juego

Se ha liberado el primer demo. Prueba esta nueva aventura y comenta tus impresiones.

  • El motor del juego está en un 90% de su desarrollo. Todavía hay algunas cosas que implementar.
  • Hay un nuevo set de niveles.
  • La primera cutscene ha sido parcialmente implementada. El juego usará varias cutscenes para contar la trama principal.
  • La gran banda sonora compuesta por Beatscribe
Updated 14 days ago
StatusIn development
Rated 4.5 out of 5 stars
(4 total ratings)
Made withAdobe Photoshop, GB Studio, Aseprite
Tags2D, android, Game Boy, Game Boy ROM, gbstudio, indiegame, Pixel Art, Retro, Singleplayer
Average sessionA few hours
LanguagesEnglish, Spanish; Latin America
InputsKeyboard, Gamepad (any), Touchscreen


Buy Now$15.00 USD or more

In order to download this game you must purchase it at or above the minimum price of $15 USD. You will get access to the following files:

Cosmo Knight Proto Beta v.0.47.gbc 2 MB
Cosmo Knight Proto Beta 1.84(DEMO VER).gbc 2 MB

Development log


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on a site with uploaders abusing the hell out of tags, THANK YOU for putting "A GameBoy Color Platform game."

I loved that so much!!!

Thank you very much, we continue working on this game, new original music is being created for it.

Nice game !

Thanks for the video, there will be more news soon.

Pretty awesome. Competent work. Good work

Thank you for your kind words! We're glad that you think our work is competent and we appreciate your support. We'll keep working hard to make the game even better. Thanks for playing!

This is great! Love the gaining and losing armour, has that Altered Beast/Ghost & Goblins touch, and plays like a really cool GBC Shinobi. Great work


Thank you so much! I'm thrilled that you are enjoying the game and appreciate your feedback. We were definitely inspired by classic games like Ninja Gaiden and Ghosts & Goblins, and we're glad to hear that the gameplay has a cool Shinobi vibe. Thanks for playing and sharing your thoughts!

Oh man, this is looking slick!  I love it!

Thank you so much! I'm glad you like it! We are working hard to bring a great gaming experience.

This game shows a lot of talent, and is so far one of the best GB homebrew titles out there, so I think moving in this direction away from the licenced property it was based on is a great idea. Looking forward to seeing where it goes.

Thank you very much. It was an interesting decision to want to take advantage of the already created game. The project is progressing very well and is becoming something totally different from the original fangame. I really hope you like this new project.

A decir verdad, esto me recuerda a los cambios de Contra a Probotector, o Hiryu No Ken a Flying Warriors, y eso es lo que lo hace interesante XD. Cuando salga le echaré un vistazo. 

Justamente, la idea es utilizar el motor base, pero adaptarlo a esta nueva aventura. Espero también quieras probarlo y pases un buen momento justo como el con el juego anterior. 

súper genial!


¡Gracias! espero este nuevo proyecto sea tan genial o mejor que el pasado.