Is it one of your meta-stuff jokes? Like you are playing "Guess what I'm Playing - forum game " ;)

No. It's not meta. It's a bit of a parody of that thread, but it's a real proper game I have in mind.

And the hint, or rather the solution, is in the thread I linked to.

I honestly thought you had it when you said you did.

Just go through the whole thread.
EDIT: Since I'd really be happy to pass my turn, if you want to take it. Here is a hint. Go through the relevant thread, not the search results but the thread, to the very end.

Yes, and probably yes.

You can't mention it too often. A great game; and now it's freeware.

I can kill a 3rd most powerful opponent with a mere goblin! Even on a light square!

Let's make it a bit easier:

I can kill Djinni with a mere goblin! Even on a light square!

Is it a classic or an indie game?

Classic

so you are playing the Atari 8-bit version?

No, some other version - made exclusively (as far as I know) on PC

is it a shame it is only available on Steam?

I mean a real classic game here, no subtitle. And that one is not available anywhere AFAIK

so instead of The Classic game, it involves Light and Dark?

Nope, that one was released on many different systems. I mean PC exclusive ;)

So other than goblins and djinns, what other units are avilable?