Ultimate Doom Builder Tutorial: Part 5: Stairs, Blocking Linedefs, Flat Alignment

In this series, I create a new Doom 2 map from scratch, in order to teach how to use Ultimate Doom Builder. This video adds some stairs, then discusses blocking linedefs and flat alignment issues.

0:00 Intro Clip
0:09 Off-Camera Changes
1:22 Building Some Stairs
3:13 Gotchas With Flat Alignment
5:06 Finishing The Steps
6:32 Impassable/Blocking Linedefs