Aeon is a game written with Multi-Platform Arcade Game Designer 0.7.10 originally for the ZX Spectrum. It has been converted for Amstrad CPC by VincentGR and Kukulcan, music conversion by SuTeKH and help by Kees Van OSS. The game includes 4 mini-games (action, platform, labyrinth).
Xyphoe has played the game in a recent streaming. Better use this link than the video below as it starts at 35 minutes and 31 seconds.