The short version
Choose for the way your child plays
Choose the shape sorter for a clear matching puzzle, or the building bag for making and rearranging. Begin with age suitability, then think about the play your child already enjoys. You do not need both to make a welcoming play corner.
A good fit if…
You are deciding which activity to add, and want to compare the practical differences without treating every toy as a must-have.
Look elsewhere if…
Your current toys already support both kinds of play, or the age guidance does not fit your child. Try a fresh arrangement of what you own first.
If you have room for one more toy, it helps to picture a real afternoon rather than a perfect playroom. Is your child busy trying to make a piece fit, or happily turning a small pile into something new? These two options invite different kinds of play. That difference is more useful than declaring one the best toy.
First, check which options are suitable
The linked Shape Sorting Cube is listed for ages two and up; the blue MEGA BLOKS bag is listed for ages one and up. Those are different starting points. Follow the exact packaging and instructions, and do not choose a younger child’s toy simply because a comparison includes it.
When a matching puzzle makes more sense
A shape sorter gives the activity a clear centre. Choose a piece, find an opening, turn it and try. That can suit a child who likes returning to a particular challenge. You can sit beside them with a few shapes without needing to plan a whole activity.
The trade-off is that the main puzzle stays fairly consistent. If your child is happiest inventing a different arrangement every few minutes, that focused task may not be what you want to add. Interest can change from one day to the next, and an unfinished puzzle does not need fixing.
When a building bag makes more sense
Blocks leave the outcome open. A line can become a wall, or be taken apart before it becomes anything at all. That flexibility can make a building set a useful choice when your child wants to decide what happens next.
It also asks for a little space and a place to collect the pieces afterwards. You can offer a smaller selection rather than tipping out the full bag. The useful question is whether that kind of shared floor space fits your home, even for a short session.
For a small home, compare the tidy-up too
Neither choice is free of loose pieces. The cube gives you one central toy to return to the shelf; the building bag gives you a storage destination for a larger collection. Imagine putting each away at the end of a busy day. Which routine would be easier to repeat without adding another job you dread?
Our picks depend on the family
For a focused matching activity, start with the Shape Sorting Cube review. For open-ended building, start with the MEGA BLOKS review. If both seem appealing, there is no rush to buy both. One useful activity, a reachable storage spot and a little room to play can be enough.
The table below compares the same four points for each option. The product contents and age guidance come from the linked listings; the space and family-fit notes are our editorial interpretation of the formats. We have not run a hands-on test or measured durability, so you will not find an invented star score here.
The details, side by side
Start with the practical points that matter to you.
Swipe or scroll sideways to compare all products →
| What matters to you | Melissa & Doug Shape Sorting CubeFor a focused matching moment | MEGA BLOKS First Builders Big Building Bag, BlueFor making something different |
|---|---|---|
| A good fit for | A child who likes trying a piece in a particular place. | A child who wants to connect, separate and rearrange pieces. |
| Play invitation | Match shaped pieces to openings. | Build different arrangements with blocks. |
| Listed age guidance | 2 years and up; confirm the received packaging. | 1 year and up; confirm the received packaging. |
| What comes with it | Wooden cube and 12 shapes. | Blue building bag; current detail page describes 60 blocks. Confirm the selected pack. |
| Space & tidy-up | One central toy, plus loose shapes to gather. | Offer a small selection on a clear floor area. |
| The trade-off | The same central puzzle returns each time. | More loose pieces can mean a wider tidy-up. |
| Take a closer look |




