Four bundles, and they answer four different questions. Prices are on the product pages.
Advanced Bundle
One Intro to Circuits Kit plus one Expansion Kit.
The most common upgrade path, sold as one purchase. You get the battery and core circuit blocks from the Intro Kit, plus the transistors, capacitors, resistors, gearbox motors and remote from the Expansion Kit. Ten guided builds between them. If you have one builder and you know they will stick with it, this is the one.
Family Bundle
Two Intro to Circuits Kits plus one Expansion Kit.
Same contents as the Advanced Bundle with a second Intro Kit added. That second kit matters more than it sounds, because it is a second Battery Block. Two batteries means two builds can run at once instead of one child waiting for the other to finish.
Ultimate Theme Bundle
All four Theme Builds: Walking Ant, Fire Truck, Patrol Car and 3-in-1 Mighty Machines.
This bundle still needs a Circuits Kit. It is four add-on projects, and none of them ships a power source. Three of the four models move, so the one you need is the Intro to Circuits Kit with its Battery Block. Read What do I need to run a Theme Build? before ordering this one on its own.
Mega Builder Bundle
Two Intro to Circuits Kits, one Expansion Kit, all four Theme Builds and two SparkPack: Power packs.
Everything, including the spare power. This is the only bundle that needs nothing added to it.
Quick comparison
| Bundle | Intro Kits | Expansion Kit | Theme Builds | Needs anything else? |
|---|---|---|---|---|
| Advanced Bundle | 1 | 1 | none | No |
| Family Bundle | 2 | 1 | none | No |
| Ultimate Theme Bundle | none | none | all 4 | Yes, an Intro to Circuits Kit |
| Mega Builder Bundle | 2 | 1 | all 4 | No |
Buying for a classroom rather than a household? See the Educators and Schools section instead.
