Pop-Up Wall

Pop-Up Wall is a Power-Up that quickly creates a 3x3 wall in front of the runner with the interact button or behind the runner with the sprint key plus the interact button. It costs (???) Power Coins for a dirt wall, (???) Power Coins for a cobblestone wall, (???) Power Coins for a cut copper wall, or (???) Power Coins for an obsidian wall. Weaker blocks will be replaced, while tougher blocks will be left intact with the block that would've been placed there instead being placed just in front of or behind the wall.

Debriefing
Slow down the pursuit or trap a victim. Spawn a 3x3 wall of [block] in front of yourself with [Interact] or behind yourself with [Sprint] + [Interact]. Great for a sneaky escape.