From publisher blurb:
Ever want to pit your heroes against your favorite video game?
Now you can, with creatures drawn from arcade classics! Inspiration for these monsters range from shooting waves of flying opponents to gobbling dots while navigating mazes, jousting enemy knights on flying mounts to hiding in mushrooms while dodging clockwork centipedes. If it hops, chomps, or stomps, it's in here, from the Bouncesphere to the Chompwork, from the unstoppable Megapede to Hopsquirts and Toad Kings.
This bestiary features 28 constructs, 6 plants, 2 dragons, 2 elementals, 2 fiends, 1 aberration, and 1 giant, with challenge ratings ranging from 1/2 (Blastwork, Chromatic Toadstool) to 11 (Apeamaton, Lava Troll). Including variants, it features 50 opponents in all!