Hmmm Orco, this is an interesting idea.
At the moment I generally tend to work on the basis that there needs to be at least four games of a given type to create a unique genre category for it however leaving that aside I do wonder what differences a roguelike genre would have from the standard rpg?
As far as I am aware the principle characteristics of a roguelike are A, ascii graphics, B, tactical, usually positional combat, and C random generation of a dungeon environment.
If we leave aside the problem of less than accessible ascii graphics, I wonder what we have left?
Entombed I fully agree qualifies as a roguelike, despite the fact that in most roguelikes the adventurer is alone. However inquisitor's heartbeat has no combat at all, and even in its spiritual successor Flarestar, combat is pretty low key, simply stand in the direction and shoot much as is the case in something like self destruct or the as yet rather early beta candy crashers.
that is why these sorts of games are stuck in "adventure games", which is generally where I put games which are exploration focused but don't have rpg combat.
I am actually wondering now if we do need a "maze games" category to cover games like inquisitor's heartbeat, flarestar and mortalmaze.
Ironically, there is one game I can think of is the opposite of the likes of inquisitor's heartbeat, namely it has the characteristic combat, tactics and plot of a roguelike, but not maze element.
That game is Kerkerkruip, which has difficult, tactical turn based combat, random distribution of all of it's game elements ( random items that are cursed or otherwise), and the archetypal roguelike plot of being a solo adventurer going into a dungeon full of monsters to kill an evil wizard.
I'll say I have another reservation as far as roguelikes are concerned, that is because ascii graphics are so integral to the public perception of what qualifies as a roguelike (it's even in the name), if we were to include them on an accessible games list people might get the idea that conventional roguelikes with ascii graphics are accessible, which until someone finally! comes up with that full screen sized braille display (which they bloody well should do), they currently aren't.
playable with effort quite possibly, but accessible, no.
With our dreaming and singing, Ceaseless and sorrowless we! The glory about us clinging Of the glorious futures we see,
Our souls with high music ringing; O men! It must ever be
That we dwell in our dreaming and singing, A little apart from ye. (Arthur O'Shaughnessy 1873.)