A downloadable game for Windows, macOS, and Linux

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You suddenly find yourself in an unknown declining advanced citadel of an unknown planet. Without weapons or resources, the only thing you've got to survive is a device that generates matter, but what if the sole usage of this device unleashes an unknown dark ancient power? Help this lost explorer to reach the way out of this powerful darkness in this abandoned citadel.

With this matter device as your only way to survive, deal with challenging puzzles and dangerous enemies, find hidden places to discover the dark story behind this doomed citadel or to discover hidden power-ups for the matter device.

Immersive pixel-art

Old-school inspired visuals with some modern techniques will make you feel that you're inside this lost world

Challenging levels

Being able to place your own platforms and walls is a big plus, and you will need id

Upgradable device

You can enhance matter properties to deflect enemies shoots or to explode as timed mines

Story in the visuals

Let the game tell you about what happened to this citadel and why everything is against you in this place

Platform: PC (Windows, Mac, Linux)
Engine: Unity
Single player


Download NowName your own price

Click download now to get access to the following files:

Matter 0-8-3 Windows.zip 17 MB
Matter 0-8-3 Linux.zip 22 MB
Matter 0-8-3 MacOS.app.zip 23 MB

Development log

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The MacOS version continues to face issues about the game looking totally dark. If you have this same issue, try playing the game in fullscreen. Also, if any of you players and testers find this  issue, I'd really be grateful if you tell me which version of MacOS are you using. Regards!

Hey again! I gave your game a shot and the backgrounds look great plus the controls are much tighter. I still had a bit of trouble figuring out where I was going and I'm not sure how much I can put to me being stupid. Still I'd recommend it to others as it is a fun game if you're good at it.

Hey Miss blue! 

You might want to read the last post of my devlog https://forums.tigsource.com/index.php?topic=58794.40, some friends helped me to do testing

TL;DR: I am so mastered in my own game (as a player, not as a dev) that I didn't notice how difficult is my game, I definitely need more people testing my game, and it cannot be me or anyone that saw designing my game, and totally those levels cannot be the ones at the demo

Also... conveyance is not as good as I thought, you got lost tons of times, I gotta think about the left door and why you didn't find it

As always, your outcome is very useful and thank you for that! You helped me to detect some bugs (tho I made it insanely difficult without noticing, sorry for that)


Ah that's okay, the game being hard isn't the worst thing ever after all. They're are plenty of difficult games out there though toning it down a touch never hurts. I dunno how much you should change. Some of it was me just being a complete idiot and I could just be the rare fool against all the others who play your game competently. Either way I'm glad you could find the video useful :D

Hello! I liked your demo, it has good potential to be a great game though I would suggest a small tutorial to ease the player into the game and maybe a bit more diversity on the backgrounds. Aside from that you've made a good start and I wish you like in this and your future projects! I made a let's play of your game here-

Hi Miss Blue... Woww! I'm really glad you played my demo! Thank you for your time doing this video and your feedback, this means a lot for me, specially now. 

About the game, unfortunately you played a bit outdated version, the new one has gameplay fixes at the 2nd level and also that tutorial which I saw how much you needed in the video haha! I was laughing as crazy when you tried and failed so many times :D sorry for some stressful moments I saw that shouldn't have happened, definitely will fix those.

About the backgrounds, that's on my bucket list, after I finish all the game mechanics I have in mind, I will focus  on aesthetics (there  are actually some examples  about what I have in mind for aesthetics in the landing page)

Again, thank you for playing and hope you play it in the future with or without video ;)


You're more than welcome! I'm really glad you enjoyed it and could take something away from it (even when I was failing miserably ^-^') I'm glad you'll be working on the game more and I'll be sure to check in every so often to see your progress :D

Hey Miss Blue! Just wanted to invite you to give another try to Matter :D now with new levels aesthetics and challenges, tho it would be beyond awesome to have another video, with your sincere feedback I'd be more than grateful!

I tried to make another video but when I opened the game the tutorial menu wouldn't go away no matter what I clicked or key I pressed.

Oh noo! Sorry for that :( I saw the clicking button not do close the modal a few times but I couldn't spot the specific reason and I thought it was an editor bug, I would have to remove the menus in the meantime

You downloaded the Windows version, right?

Yeah I downloaded the Windows version.

Done! You should be able to close the mini-tut and start playing.