In 2011, Hasbro launched their own version of the little plastic construction block - Kre-O. They started off with a Transformers Kre-O line, and have now extended it to include characters and ships from their 2012 movie Battleship.
The bricks look just like LEGO and are supposed to be fully compatible.
The sets also come with mini-action figures called Kreons, that look like LEGO minifigures, but have a smoother, more curved styling to them.
There are currently 5 sets in the line up, outlined below.
This is the most complex set in the range with more than 500 pieces, and is suitable for older children, from ages 8 years and up.
The set includes 6 customizable missile launchers and opens up to reveal 3 levels.
It also comes with 5 Kreon figures.
You should expect to pay around $85 for this set.
With 277 pieces, this is an easier set to construct and is suitable for kids aged 7 years and over.
The set consists of an alien craft armed with alien-technology weapons, and a little Navy scout boat, plus 5 Kreon minifigures.
This set is priced around $40.
Also suitable for kids aged 7 years and up, and priced at around $25.
177 pieces go into constructing this battle helicopter with rotating blades and 2 missile launchers.
Set includes two Kreon figures - a pilot and an alien.
Land Defense Battle Pack:
For ages 6 years and up.
Includes 81 pieces and 4 minifigures.
Build your own firing weapons.
Costs around $15.
66 pieces go into building a Navy scuba boat and some underwater greenery.
Also includes 2 Kreon figures (a hero and an alien).
Suitable for kids aged 6 years and up.
You should be able to get this for $10 or less.