Pretty good Pac-Man collection if you ask me, and the selection of games isn't bad either. There are many bangers one can really get a fun time out of, like Pac-Mania, Arrangement and my guilty pleasure, Pac-Man 256.
There are some other games to which this collection also helps to come out of obscurity a little bit such as Pac-Land or Pac & Pal, both very interesting takes on the original formula IMO, and Pac-Land, which I love for its uniqueness compared to the rest of games in the collection.
Oh and yeah, Pac In Time can suck it LOL

In technical terms of the games themselves, it's really lackluster overall. No video modes (beyond a CRT filter), DIP switches, button mapping or even save states for games that really need them (i.e OG Pac-Man). Most of the achievements are pretty fine too, although there are some instances which are either too challenging or require a lot of grinding, making it annoying at times. Also, the emulation sometimes can take a dive in FPS, so it's not too good either.

Now, I quite liked the game's presentation. I love the concept of the game giving you the chance to customize your own arcade with guest characters appearing over time, that's a nice detail.

I'm not getting everything for the moment because normally I play Pac-Man for the nobility's sake. I recommend it still, but it could have been so much better...