Pandora-Vectrex is a Vectrex emulator based upon VecX by Valavan Manohararajah and ported to Pandora by ZX-81.

Changes:

– CPU overclock options (it’s now 633Mhz by default)
– Overlays support!

http://zx81.zx81.free.fr/serendipity/index.php?/archives/495-Caanoo-Vectrex-Vectrex-Emulator-for-Caanoo-v1.1.1.html