This requires two things, the precisely portal texture pack, which can be dowloaded here, It also requires the portal gun mod, which can be downloaded here.

Hello! This is my map for the portal gun mod, this is more of a tutorial on how to use the portal gun and more.
This is only the demo, if it gains popularity I will extend it accordingly.

If doing a LP (This map is singleplayer) Please put links to your youtube channel.