There are Lego 'blind bags' for mini figurines, which do not let you see the content of the bag before opening it. The bag contains one mini figure from a predefined set, and some characters in the set are more rare than others.

All blind bags cost the same amount, but the rarity aspect could encourage kids to buy more bags in an effort get lucky and find the rare figure. This could be construed as gambling.

Wow, way to destroy your credibility there Lego.

I thought they were above shithead tactics like this.

The people that are buying the Lego collectible minifigure packs are not typically children. It's clearly targeted at the AFOL audience.

A Disney themed minifig blind bag clearly marked as being for ages 5+ is something young kids want, regardless of any attempted AFOL targeting.