Picture-only or labeled
Every set here comes in two versions of the same cards. The picture-only cards leave the names off, so children who can't read yet can play by matching the drawing on the calling card to the one on their board. The labeled cards print the name under each picture, which turns the game into quiet vocabulary practice for early readers: a child who hears "hermit crab" or "Ouranosaurus" called has to find the word as well as the picture.
Because the calling cards show the picture, picture-only and labeled boards can be played at the same table.
How many pictures are in the pool
This is the difference that matters most once a game starts, and it's easy to miss.
In most of the sets, the pool is 25 pictures and each card shows 24 of them. Almost every call lets almost every player cover a square, so rounds move quickly and nobody sits out for long. That suits young children, big groups and parties where you want to play several short rounds. The Safari, Dinosaur, Birthday, Circus, Farm Animal and Space sets all work this way.
A few sets draw from a bigger pool. Dino Party Bingo has 30 animals, Space Adventure Bingo has 40 pictures, Ocean Animal Bingo has 42 and Birthday Party Bingo has 48. With more pictures than squares, a call often misses your card entirely, so games run longer and the finish is less predictable. Older kids and grown-ups tend to enjoy that tension more than toddlers do.
Picking a theme
Animals. The safari set covers the Big Five plus smaller finds like a meerkat and a lilac-breasted roller. The farm set mixes animals with the barn, the tractor and what grows in the fields. The ocean set reaches past the usual whale and octopus to a narwhal, a sea otter and a pirate ship.
Dinosaurs. There are two, and they look quite different. Dino Party Bingo has baby-faced dinosaurs in soft pastels with wavy mint edges. Dinosaur Bingo is set in a jungle, with palm trees and a smoking volcano across the top of every card. Each has dinosaurs the other doesn't, so the labeled versions teach a different set of names.
Space. Space Adventure Bingo is real astronomy, with the planets, constellations such as Orion and Cassiopeia, star types and real spacecraft. Space Bingo is the cartoon version, with a cat and a dog in space helmets, a green alien and a ray gun next to its rockets and planets. Choose the first for a science unit and the second for a party.
Birthdays. Birthday Bingo is soft and pastel, with smiling cakes, balloons, unicorns and rainbows. Birthday Party Bingo is bigger and brighter, with a cream background, a red frame and 48 party pictures from a cupcake tower to a toy train.
Circus. Big top animals and performers share the grid with popcorn, cotton candy and a Ferris wheel, framed in red-and-white stripes.
How many cards to print
Give each player one card. The 30-card set covers a classroom or a mid-size party, and the 50-card set is for bigger groups. In most sets the two are laid out differently from each other, so a family that plays often can switch sets for a fresh round. Space Adventure Bingo is the exception, with a single 50-card set.
Printing and playing
The cards print one per page. Cardstock holds up if you plan to reuse the boards, and plain paper is fine for a one-time party. Print at actual size so the grid stays square. Cut the calling cards apart, drop them in a bowl or a bag and draw one at a time. The paper markers work, and so do buttons, coins or small candies if you'd rather not cut out circles.