I have never understood lego games
I played the original one (about the prequel episodes) on PC on release, and later cooped the "complete" 6-episodes edition on Wii with younger cousins, both were fun. Gameplay-wise they remind me of the 3D rayman games on PC, a mix of classic platformer + gimmicky combat + SECRETS SECRETS SECRETS. But with split screen CO-OP!
There're huge levels filled with secrets and references and A LOT of characters, most of which are just cosmetically diffferent, but some of them are used to get secrets (droids open doors, jedi move stuff around, stormtroopers pass security and so on). Most of the missions are very easy, because there're lots of checkpoints and you can retry as many times as you need, but some levels of the original PC release were pretty hardcore (Episode I pod-racing
)