YouTube creators have documented "Full Walkthrough" solutions for notoriously difficult "Monolith" and "Nova" stages.
You must draw a single continuous line (the track) that picks up every alien on the board and delivers them to their corresponding destination before reaching the exit. Key Mechanics: Cosmic-Express.rar
Advanced stages include portals that warp your train across the map or multiple layers of tracks. Cosmic-Express.rar
Executables bundled with hidden malicious code. Cosmic-Express.rar