You can sometimes find the original web-based demo or browser versions here, which were originally available for free during the game's initial development.
Check the developer, Studio Threaks, for any legacy versions or official free demos they may still host. ⚠️ A Note on Web Versions
The game gained popularity as a free-to-play browser game (Flash-based). However, since the discontinuation of Adobe Flash Player, many of the original "free" web links no longer function without specialized emulators or standalone players like Ruffle. Quick Technical Specs Puzzle, Simulation, Hacking. Platform: Windows, macOS, Linux (via Steam). Interface: Text-based command line (CLI).
The most common platform for the full version. It is often included in sales for a very low price.