Mystical is a vertical shooter from Infogrames.
Probably a Direct Disk to Cartridge Port.
Covers from CPCmania
You can download in PDF from CPCmania (see the links).
You can download in CPR for use in emulators and BIN from CPCmania (see the links).
Implementation details and use of Plus hardware
- No plus features except cartridge paging are used.
http://www.cpcmania.com/ (on the games section: GX4000/CPC+ GAMES)