The lights are on
According to Team Meat's official blog, Super Meat World is now available on Steam. The bonus chapter can be unlocked with 20 bandages and can be found to the left of chapter 1. This portal will give you access to custom made chapters and single levels designed by users, other developers, and Team Meat.
Super Meat World launched with eight new chapters (more than 140 levels) with more features to be added over time to the free offering, according to the blog.
The team also mentions the level editor will soon be released as a public beta. The level editor update will also include an update to Super Meat World called "The Unknown" that will randomly pull high-rated levels together.