This repository contains source code of the game that can be compiled for Atari 8bit platform and into Editor (currently for Windows platform). The source code is written in a portable C therefore making port of the game to other platforms (including 8bit or 16bit) should be not that hard.
The main game webpage is here: https://aim.atariscene.pl/
The compiled level editor (for Windows) can be download from here and the manual of the editor here