Some of the best side missions in Mass Effect Legendary Edition are exceptionally unique, with nothing else like them in the rest of the trilogy. Related: Mass Effect Legendary Edition: Best Things to Do After Beating the Game They also often serve as an opportunity for players to receive more lore or context for events later in the story. Often the rewards for completing these missions include more credits, morality points, and XP, but they can also eventually translate to War Assets in Mass Effect 3. Many of the best missions in Mass Effect Legendary Edition are optional, like the squadmate Loyalty missions, or hidden until players travel to new systems and scan new planets. The Galaxy is a massive place in Mass Effect Legendary Edition, but if players stay on the path of the main campaign throughout the trilogy, they will miss exploring most of it.