This probably isn't going to be what you'd expect.
This isn't a rich Diablo-like where you manage extensive amounts of loot and in-depth character building.. though the game is, nevertheless, done to the general style of a Diablo-like.
This isn't a tactical game, though you do control three characters at a time; In fact, the controls are rather simplistic, and interactions are fairly straightforward.
Despite not being either of those, this also isn't a hands-off team management game, where you support your characters from the background via (spells or similar mechanics).
Nope. What this is is a casual, relaxing Diablo-like with environments that are engaging enough in their design [y'know, in contrast to something such as Path of Exile's mindnumbingly repetitive and bland procedural layouts], with a difficulty and charm that allows it to appeal to entry-level Diablo-like gamers, as well as to those looking for the Diablo experience but with low-stress and low-micromanagement [of loot, character planning, etc].
It's not perfect, even within that context- some elements are poorly clarified, so you'll still have to do some unnecessary brainteasing at times, and some interface elements are clunky, meaning it's not as accessible to new players as it could be.
So, for most gamers, I wouldn't recommend this- but that's something I wouldn't do so because of the style of the game, not because of any major faults that the game has. If you go into this knowing exactly what you're getting, and being able to appreciate the niche charm of the game, then it's recommendable.
(After all, I never came across a single bug, movement or control issue, or any other design element clearly in need of attention. That alone brings it ahead of so many games I've played..)
Unfortunately, all the other possible design approaches I mentioned are, in a way, fundamentally [i]better[/i]. Or, at the very least, richer. I like this game, because there's nothing offensive about it, and because it's a uniquely relaxing example of the genre. Would I better like a game that utilizes one of the other approaches? Yes, pretty assuredly.
However, would that game be able to replace this one? No, likely not; After all, by expanding the game's mechanics to be more appealing [and really, any of those approaches sounds like it could have been used to turn this into quite the fun game] this game would lose the unique charm it already does have.
Were I to compare this to music, it would be a simple, soothing indie instrumental track. Or maybe even a basic chiptune. It doesn't aim for any lofty ambitions, and it lacks a richness of depth, but what it does offer is something that more mainstream offerings overshoot.
As any changes to the formula would also completely change the form of the appeal that the work would offer, it is this game's lack of ambition that makes it able to offer itself as a relaxing gaming option. Of course, the same could be said for the grindy, straightforward RPG combat of RPGMaker-style JRPGs and of typical MMORPGs, so..
In the end, were there more low-intensity Diablo-likes out there, I don't see myself having any reason to recommend this game. Of course, as someone who can find JRPG grind relaxing, I suppose it isn't surprising that I'm inclined towards this style, either. :P
Basically, if you have any hesitations about this game, then you probably won't like it. But if you find yourself intrigued by the idea of a simple-yet-compelling, low-intensity Diablo-like, then this may scratch an itch you didn't even realize you had. That said, given the game's simplicity, it feels as though it should retail at no more than two-thirds its current retail price (same for Rebound), so I'd recommend grabbing a heavily discounted or bundled copy.
Similarly, though I haven't played it myself and thus can't give a firm claim on the matter, I have hesitation towards the game's co-op remake; After all, as simple as the game is, splitting up the characters among multiple players seems as though it would bring the game down to sleep-inducing levels of simplicity.
Of course, I'm as enthusiastic a co-op gamer as they come, but for games like this and Kingdom and so forth, co-op really feels as though it highlights a game's lack of depth more than it adds to the game's breadth of options. But, again, I haven't played with that version of the game, so perhaps they expanded other elements to make up for things.
Likewise, perhaps the game's simplicity would allow for co-op to cater well to introducing a child to the genre. On the other hand, some of the game's themes are quite adult-oriented, so do be aware of that fact.
In any case, this is a game that manages to surpass the "Flash game simplicity" criticism and breach into legitimate game development territory, while lacking the ambition to go any further than that. If you're looking for something stimulating, this game will not satisfy; However, if you're looking for something more laid back than the usual bloated Diablo-like affair, and you see a chance to get this at a bargain, then I'd definitely recommend installing it and giving it a try.
It is, at least, of a quality good enough to warrant that much of a consideration, even if it lacks the passion to shoot for loftier levels of competition.
As a bit of a tangential consideration, the developer/publisher made the co-op Rebound extension both a standalone and a bundleable, showing that they've improved how they approach marketing towards their consumerbase. On the other hand, Warhammer Quest is still abusive in how its DLC is handled [in that it's cheaper to rebuy the game+DLC than it is to buy the DLC], so I guess we can't excuse them on their conduct just yet.
