You know, this is about as perfect of execution as you could hope for from a spot the difference game.

It's got two different modes, an insane amount of creativity and charm, and it's handled really well. The levels towards the end did get a tad bit unfair if you ask me, with some of the final levels having differences that were only a few pixels on screen. But the main game is extremely fair and doable, that was just the extra levels.

It had a ton of variety in the art styles used and there were a lot of different pictures with a lot of different changes, so the game always had something new up it's sleeve. It also used a ton of other Namco IPs for easter eggs & content in the game, and it's so charming.
The music was probably my least favorite part, mostly just being basic chiptune remixes of classical music or other old public domain music, but even those were alright.

So yeah honestly, for what this is, it's great. If you think a spot the differences game would be interesting, then this is a great choice.