StrangeBlocks is a Puzzle map inspired by Valve's "Portal", although not containing any space-time-warping devices. The map focuses around multiple cubes you can use to interact with the environment.
The base-map comes with 5 short but interesting chambers that introduce you to the concepts of the map and get progressively harder. They are meant more as a tutorial than as a finished product that takes anywhere between 10 and 20 minutes to complete. Furthermore, the map allows players to create and share their own chambers on the dedicated subreddit and load other players puzzles into the map and play them for fun.
I'm currently trying to gather a small community that have fun creating and sharing their puzzles, so join us and try it out.