A downloadable game for Windows and Linux

Buy Now$14.99 USD or more


A vast planet hidden in the outer reaches of space, ruins of a long extinct civilization - you awake in the wreck of mankind's first and only interstellar starship, lightyears away from earth. Soon to find that you are humanity's last hope of survival from a disaster. A disaster that was supposedly caused by the inhabitants of this very planet. As you explore strange landscapes, you can't shake off the feeling that you are not alone.

Exotic Matter (formerly known as Xcylin) is an RPG that puts you on a planet where you need to explore, craft and fight in order to survive. A strong story and a sophisticated dungeon generation system ensure that no two missions play the same. And Exotic Matter's fully moddable engine makes sure that there is also a huge amount of community made planets waiting for you to explore.



  • A completely simulated planet to roam freely
  • Fully destructable/buildable terrain
  • Build your own shelters/bases with sophisticated in-game technology, connecting lights and doors with switches, pressure sensitive blocks and even in-game computer systems
  • Dig for resources deep below the surface
  • A vast amount of different block types await you, each with different attributes and abilities
  • Find hundreds of ancient items left on the planet by an old civilization
  • Craft new items in your inventory or use replicator technology to create even more complex items
  • Find, craft or replicate a multitude of weapons to protect yourself from the planet's alien lifeforms
  • Explore lots of dungeons created by a sophisticated dungeon generation system
  • A strong storyline to guide you trough the game
  • No two missions ever play the same
  • Customize the game via Javascript (modding) or build your own custom world type with just a few lines of code

(Please note that although these features are all planned for the game, they are all subject to change)

System Requirements

  • Intel Core i5 or i7 or comparable AMD CPU
  • At least 4GB of RAM
  • Dedicated graphics card like NVIDIA GTX560Ti / AMD R7970 or comparable with at least 1GB of video RAM.
  • at least 1GB free disk space
  • Windows
    • Windows 7 64bit
    • Windows 8 64bit
    • Windows 8.1 64bit
    • Windows 10 64bit
  • OR Linux 64bit
  • Mouse/Trackpad and Keyboard

Please note that there won't be a 32bit version of the game. If you don't have a 64bit Windows or Linux you won't be able to play the game. Also note that these are estimates, they will be refined in the near future.


The game has been greenlit and you'll get a Steam key with your order as soon as we release the game.


Please note that this is a pre-order. You'll get the game as soon as we reach alpha phase. Of course you will also get all versions of the game that follow the Alpha up until the Release version.

More information

Published 1 year ago
StatusIn development
PlatformsWindows, Linux
GenreRole Playing
Tags3D, Moddable, Open World, Sci-fi, Voxel
LicenseAll rights reserved
Asset licenseAll rights reserved
Average sessionA few hours
InputsKeyboard, Mouse


Buy Now$14.99 USD or more

In order to download this game you must purchase it at or above the minimum price of $14.99 USD. You will get access to the following files:

Exotic Matter Alpha (Pre-Order)
Exotic Matter Alpha (Steam Key)


Log in with your itch.io account to leave a comment.

hey there can i ask about progress again anything new i should know off

Hi Axemall! We still plan on releasing in late July (if everything goes well). If you wanna stay up to date follow us on Facebook: http://fb.me/exomatter.game

hello this is april does the game go ahead or not

Hi Axemall - thanks for your interest in the game's progress. Yes the game is progressing well. We are currently adding a lot of items and new block types, making sure the modding interface is sound and creating the dungeon generation system. But still we are a few months away from alpha release.

You can follow the game's progress on twitter (@moebiusdev) or on our Facebook page: http://fb.me/exomatter.game.

thats great news just glad your still around

do you have a demo yet its been 8 month and nothing to test

sorry, we are not ready for a demo yet. But you'll be informed as soon as we go live - please be patient, the game is just a lot of work, and I don't wanna release something that doesn't show the game's full potential. Also, my offer of giving you your money back still stands.

Deleted post

Sorry, for some reason I didn't receive any updates from itch.io, so I overlooked your comments. I develop the game on my own, so it is a lot of work to keep track of everything. If you want your money back that can of course be arranged - but rest assured, that I'm working on the game day and night! Early-Access release is set for April 2017.

will the game be available this year

i have had the game 46 days now no sighn of devs or alpha

Why not disabling modding for the pre alpha, so people already get something to play when they buy it here?

In general this is a good idea, but Xcylin the game is also basically a mod, or rather a world template for the Xcylin engine, so I think disabling modding is not really an option. But I will look into it, maybe there is a way ...

i am really looking forward to this but i have bought the game to early why is there no pre alpha to play around in

We are working hard on Xcylin and could release an pre alpha version, but as Xcylin is moddable we don't want to release a version where the modding interface is not mostly finished. That would lead to modders being very disappointed when they need to completely rework their mods with later versions of the game. But rest assured that we will release Xcylin as soon as it is possible! :)

i understand that mabey i should take up moding, well atleast its nice knowing you will release something solid

hi i just purchased when will this be released to play

Thank you for your purchase. We plan an alpha release later this year.

Please follow us on Twitter (@xcylin or @moebiusdev) to get the release as soon as it comes out. Of course you will also get the final build, once we release it!

thanks for the reply i don,t use twitter but i will check back and forth for a release

I think you will also be informed via itch.io when we launch the alpha. :)

my intel hd4000 could run minecraft at a decent rate, how do you thing my intel hd5500 will handle this game?

Xcylin uses better textures, special liquid shaders and also uses blocks that are not cube shaped, so I think the hd5500 will not handle this game very well :/ But I'm working on low-end settings, so maybe(!) it will be possible that Xcylin runs at 30 fps on a hd5500 later in the development.


I think we will start seeing a lot of voxel based games popping up and the connotation to minecraft will soon disappear when people discover the vaster potential of these type of games.


This doesn't look very original...


I guess you think that all blocky games are like Minecraft, right? That is about as true as the statement that all RTS games are like Command & Conquer. I hope you will revise your opinion once you have the opportunity to play the game. :)


I suggest you make a demo in that case, cause at this point it is unclear what you are selling if it isn't a minecraft look alike. :)


Yes, you are right. I plan to release a demo version when the alpha is released.