Not cover related -I do have a cover in mind for "The Keep" but "The Quest" will be more than average image manipulation - but anyway how did GOG miss these games https://store.steampowered.com/app/317370/The_Keep
Man did Legend of Grimrock start a trend or what. These RPGs are more of what I started playing with. Less focus on ENB presets (although they are nice) and more focus on story and character development and loads of spells and Items.
They are not even in the upcoming titles. "The Quest" reminds me of Might and Magic 6, but tile based but may be a bit oversimplified for an outdoor tile based RPG
I would have rather bought them here on GOG, but when I seen these games on steam I looked for them on GOG and did not find any mention, and just bought them from steam. GOG did have Starcrawlers so I got that one here anyway.
Mobeeuz: I have looked at parchment and it does remind me of a game screen, but I don't think it will look right for the Xeen games. For the cover I will use some old stone tablet (like Moses) with a gold border around it and some more random wear and cracks, instead of that I just threw together with a simple filter together.
I will use a Xeen like font and add something like "the final gateway to the lands of Xeen". I will work on it later, but I do have a cover that you may have the game for, but is not a GOG game - for your game launcher.
Again the reason i am bothering with the expansion pack is because I have played Might and Magic III and won and I played Might and Magic world of Xeen and with a lot of implosion spells also beat it, Swords of Xeen I have not played yet.