A.L.C.O.N. 2020 is a shoot them up already existing on Amstrad CPC since 1987. Abalore started to work on a remake in 2016 and it's now available.
The PlayCity extension is not required but recommended to hear the full 6 in-game audio channels. A 2-button gamepad or joystick (best) is also a nice addition to enjoy the full arcade experience.
Programmation is by d'Abalore, graphics by TotO, and music by Targhan.