My kids have played quite a few of the Lego videogames. I like the Star Wars Lego games too, but this is probably the one I found most intriguing. Recognisable Lego building concepts combine with videogame design to make for an exciting narrative and amusing combat/challenges.
Platforms: Literally everything. (But double check before purchase.)
Difficulty: Not hard, but we had to use a guide twice when we didn’t notice critical environmental features.
Age-related suggestions: Officially 10+, but not really violent or anything – unless Lego figures exploding into their parts is considered violent. More like just playing Lego.
Consider consulting detailed reviews before purchase.