Assuming a perfect scenario with no technical issues or legal complications (which is idealistic), I'd give the game itself a 9.5/10 for its engaging gameplay, charming presentation, and innovative features. However, the context of this review is complicated by the nature of ROM downloads.
The repackaged ROM download of "Super Mario 3D World" for the Wii, often sought after for its portability and nostalgic value, presents a unique situation for review. This game, originally released for the Wii U in 2013, is a standout title in the Mario series, offering innovative gameplay, charming graphics, and delightful multiplayer features.