Mod talk:Buildaria/@comment-98.225.17.70-20120316202814/@comment-1863391-20120317015602

The mod, actually, offers many advanced building tools. Map builders use these for adventure, role playing, parkour, et cetera maps in a faster time, meaning more content for you in the long run.

Terraria should take Minecraft's example and have a creative mode, with creative world. Items from creative worlds and inventories would not be interchangeable with those from standard worlds.