There are side - missions,
random crime encounters, races, and
gold bricks to find which is enough to keep you busy for another 15 hours or more.
Obviously, there is a catch — you can't just go wandering round
random Lego world biomes, you do have to complete several missions in the worlds helping NPC's with builds, finding
bricks, finding characters — the list is endless — all to earn the
gold bricks allowing you to visit new worlds.