NLO: Vrag Neizvesten

This is an unofficial adaptation of UFO: Enemy Unknown. The premise is very much the same: at its core, it's a tactical strategy game that's surrounded by various managing elements.

Extraterrestrial forces try to abduct humans and induce world panic, and you try to shoot their saucers down and then deal with the visitors.

This ZX-Spectrum "port" recreates much of the original game features: there's, of course the globe, base building, technology research, 3D-cursor and even UFOpedia. The interface is similar as well.

However, there's one important difference - the ground battles are done in real-time and you can only control one soldier at a time, unlike the original game. There are different locales around the world, including both Earth settlements and the downed spaceships.

Graphic-wise, "tactical" battles use monochrome isometric mode like in Ultimate's Filmation engine, while the rest of the game is in color.