Flame
Flames are stationary fireballs.
The reactions of different types of boxes to flames are similar to their reactions to fireballs. Wooden Boxes are destroyed on contact, and Powder Kegs explode, destroying any neighbouring objects. Steel Boxes, Boulders, and Plasma Boxes simply extinguish the flame. Unlike fireballs, flames are not reflected by Reflectors or split by Prisms – the former extinguishes the flame while the latter breaks upon contact.