This directed energy field has the power to function as solid matter for people who aren't invited, while being completely permeable to anyone else. I guess that makes it a door.
Forcefield price in Growtopia: sells for about 5 WL, buyers pay about 2 WL (median of 1275 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: VYBUG, KENDAS, QRLE, YUZZU, AKISER