Building systems come in a huge variety of styles, shapes, materials, and levels of difficulty. This week we take a look at several of them—one traditional, one non-traditional, and two that offer a new twist on the classics.

Take Along Zoo & Aquarium (Playmobil)
Happy 40th birthday to Playmobil! Playmobil sets are always well made, colorful, and fun to play with—what could be better than that?—and this one is no exception. What makes the Zoo & Aquarium especially unique is that it’s great for both indoor and outdoor play. It comes with trees, pools, fences, and quite a few animals (such as zebras, giraffes, lions, fish, walrus), as well as “human” caretakers. That’s a lot of pieces for one set. And there’s room for a few more, just in case your child wants to invite some other animal friends over for a visit.  When you open up the kit, one side is the zoo, the other is the aquarium, which your child can actually fill up with water and let the sea creatures (and the rest of the animals—hey, giraffes swim too) take a dip. When playtime’s over, all the pieces fit easily into the case, which (after you’ve drained and dried it) folds up for storage or easy transport. Retails for $49. http://www.playmobil.us/

Captain Toad: Treasure Hunter (Nintendo)
Nintendo’s Mario games are kind of like Oprah, who made Dr. Phil and Dr. Oz so famous that they got their own show. Similarly, Nintendo has given quite a few Mario stars their own games. These include Yoshi, Luigi, Princess Peach, and now Captain Toad. What’s especially interesting about the Captain is that he has no particular super powers—not even jumping. He just walks, runs, and has a real knack for finding gold coins, turnips that can be used to defeat enemies, and even a blockade-busting pickaxe. He’s also something of a genius when it comes to putting things together to solve puzzles.  Captain Toad is a game for the whole family. Kids will like the simple controls and easy mechanics of the game, and adults will appreciate the puzzles and the challenges required to collect all the treasures. Captain Toad retails for around $40 and is available everywhere video games are sold, from the Wii U eShop, or at http://captaintoad.nintendo.com/

Light Stax (Light Stax)
From a distance, Light Stax look like Duplo (Lego’s jumbo size bricks for preschoolers), but connect at least one Stax block to the power base, and every other block that’s connected—directly or indirectly—will light up. The base, which can run on batteries or a USB cable, has enough juice to light up at least 100 blocks. Stax are compatible with Duplo (but only the Stax blocks illuminate), but our favorite feature is the auto-shutoff, which means your child can build a completely new nightlight every night. Stax come in sets from 12 blocks to more than 100, and prices run from $35 to $250. http://lightstax.com/

LEGO Chain Reactions (Klutz)
If you liked the classic game Mousetrap, you’ll love Klutz’s very clever LEGO Chain Reaction book. The motto is “Teach Your Bricks New Tricks,” and by incorporating ordinary LEGO elements and a few other ingredients, that’s exactly what happens. What’s the point of doing ridiculously simple things like tossing a gum wrapper or bouncing a ball in one step when you can do it in 20 or 30 steps using levers, pulleys, ramps, hammers, string, tires, and funnels? An engaging, entertaining, and educational activity for the whole family. Comes with 30+ Lego elements and instructions for building 10 Rube Goldberg machines. Retails for around $20. http://klutz.com