Here's a list of things that have been changed from the original games in this bundle.
Metroid Prime 1 and Prime 2:
- The controls have been changed to the motion controls of Prime 3
- Slightly improved textures
- Shorter loading times
- Shadow effects have been added
- The scan visor has been changed and now resembles that of Prime 3 more closely
- The games can now be played in widescreen
- The achievement system from Prime 3 has also been implemented here
Metroid Prime:
- Many of the visual effects on the Arm Cannon have been simplified or removed (such as the ice when using the Ice Beam)
Metroid Prime 2: Echoes: - The difficulty of certain end bosses has been lowered
- In Samus' visor, you can now see how much battery the
Wii remote has left, just like in Prime 3
- The game can now be played on older 50Hz TVs, which was strangely not possible in the original version
Metroid Prime 3: Corruption:
- In one scene, the word "Damn!" has been replaced with "No!" (a bit silly)
- The glowing effect of the Hazard Shield has been removed
- Several glitches that allowed skipping parts of the game have been fixed
- There are no longer any Puffers (a type of enemy) present in the Piston Hall