crodgers: I have the SS first encounter and second encounter from here at GOG. I looked at the info for the other SS games in the bundle. they do not look anything like SS TFE and TSE. They look more like late eighties/early nineties scrollers - like Duke Nukem or Duke Nukem 2. Is that really what they are like?
One is kinda like a console RPG from the mid to late 90s, one is a shoot-em up in the vein of Contra (but with bullet hell levels of enemies), and one is a silly action-reflex game that was ported from Android / Apple phones.
I have no idea what that Greek Encounter is like.
They're like this on purpose, the dev teams were told to go wild with what they wanted to do, and they did so. So these are three (well, four) decentish games, but sadly, they're not very long, or so I've heard.