Terrahawks - Videopac homebrew release for the ZX Spectrum
Originally developed for the Odyssey2 (Videopac), Terrahawks is a Shoot 'em up style game that feels like Space Invaders but far more action packed, especially as enemies can move around the screen at a rapid rate while trying to take you out. This more recent version is a homebrew ZX Spectrum port, developed by gazj82 that should work on just about any Spectrum. In Terrahawk you play the member of an elite group of trained specialists and it's your duty to defend Earth against the dangers from space.
Odyssey2 Version Gameplay
So far the reviews are very positive with one such player giving feedback that it's a great game, with lovely graphical touches. So if others are enjoying it, most likely you will do as well.