In Mass Effect Legendary Edition, the trilogy's best ending is still available if you only play ME3
Mass Effect Legendary Edition features BioWare’s full trilogy in its most accessible form yet – but it also lets you pick and choose to play individual games.
Perhaps you just want to play Mass Effect 3? Or maybe you want to start with ME2, as the series fleshes out its roster of characters, and skip ME1’s Mako?
Well, all of this – as it always did – plays into the trilogy’s big finale. Avoiding spoilers, it’s worth remembering that whatever Shepard’s own individual choices might be, these choices are also affected by how many War Assets you’ve collected across the trilogy.
It was always the case that players with saves from ME1 and ME2 would be recognised with things they may have done or collected in those games. It was also previously the case that your preparations for the finale – your Galactic Readiness – could be influenced by ME2’s multiplayer mode, which is not part of the Legendary Edition.