The game's called 'Suicide Squad: Kill the Justice League' -- due out in a few days -- and some of the footage from a particular scene involving the Dark Knight (voiced by Conroy) is already making the rounds online ... which depicts this version of Batman's brutal death.

Indeed, in this universe ... Harley Quinn fires a bullet into Batman at close range, officially killing him off -- and people who grew up watching Conroy's Batman are kinda losing it.

There's a number of reasons why folks are mad -- but the biggest one, it seems, is that some feel this is a disrespectful way to leave Conroy's legacy as the Caped Crusader. It is, in fact, the last time he played Batman before tragically passing in 2022 from cancer.

While this game's developer/distributor (Rocksteady/WB) likely didn't foresee Conroy dying so suddenly -- diehards of his character and the superhero at large are still dragging these companies through the coals for the decision to off Batman like this ... very wham bam.

However, others are actually pushing back against the outrage ... for two good reasons. One ... it's a freaking video game/fictional character -- and all this is pretty damn silly, TBH.

More importantly, though, many are rightly pointing out that Conroy himself signed up for this story when taking the job -- and considering how closely he cherished the role/character of Batman for as long as he did it ... some think the angry mob should respect his decision.