The 1st Old-School Level Design Contest: Collaboration Hack

The 1st ever Old-School Level Design Contest was held in 2017, and features 83 submissions as well as 4 switch palaces and 3 judge levels, totaling at 90 levels with 113 exits.

The compilation was kept as vanilla as possible to keep with the "SMW-like" feeling, but some exceptions were made (e.g. in the overworld) where custom resources were used. It's nothing too flashy or appealing, again to not interfere with the traditional feeling.