The Key is a point and click Amstrad CPC graphical adventure game using the Paket engine discovered in 2019 in this video of the demo game Escape the ROM created by Jordi Sureda (graphics) and Santi Ontañón (code). The game was available in spanish and english, it is now also available in french and italian since the 8th June. But you will have to solve a short enigma to be able to download the program.