I know it's a lot but these are all, in my opinion, great quality single player maps.

Original Location of My Favorites These maps are so good, I favorited them. Unforutnately there isn't a quick and easy way to subscribe to my favorites so this is where the collection comes in. These puzzles require various levels of thinking! These puzzle

Volume 2 here Volume 3 here !!!WARNING!!!! Unless you like long download times, have an empty workshop queue, have really good internet, and/or have a lot of disk space, it is not recommended you click "subscribe to all" first thing. I suggest subscribing

Here i have a collection of cool test chambers i have found on the community. Do not give me the credit for these maps, give credit to the owners.