This is a vintage Activision game called "Hacker" for the Sinclair ZX Spectrum computer. The game has been tried and tested to ensure it is in working order. As it is a vintage item, it holds a certain nostalgic appeal for collectors and enthusiasts of vintage computing. The game was developed by Activision, a well-known brand in the gaming industry, and is specifically designed to be compatible with the Sinclair ZX Spectrum system, which was popular during the 1980s.

Tested and working on my 128k