this could all be built with bricks.
looks like Habbo
Habbo is a MMOCC game. All MMOCC (
Massive Multiplayer Online Chat Community) games are the same like Habbo. There are so much games that looks Habbo. There is even an animated pixel game where you can play as animal.
Don't forget that Mobiles Disco was a hobby project by two Finnish people who later began with making the early Habbo Hotel in 2000.