I'm a 22 year old indie game dev living in Tokyo, Japan.
Linux version of Cosmos Crusade! Unzip the file, and click the .x86 or the .x86_64 file to play.
Mac version of Cosmos Crusade! Unzip the file, and click the .app file to play.
Windows version of Cosmos Crusade! Unzip the file and run the .exe in order to play.
Here is the demo of Super Space Surge for Linux! It includes the first three levels. I do not guarantee that this will work, however. Unity3d executables...
Here is the demo of Super Space Surge for Mac! It includes the first three levels.
Here is the demo of Super Space Surge for Windows! It includes the first three levels.