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Fire is a tile in Chip's Challenge that will kill Chip if he steps on it and does not have fire boots, with the Death Message stating Ooops! Don't step in the fire without fire boots!. Fire also kills any monster that steps on it, except the fireball which can safely travel over it, and walkers and bugs who treat fire as a wall. However, in the Lynx version, all monsters except for the fireball will treat it as a wall.
Blocks can be moved onto fire without destroying the block, although Chip must then have fire boots in order to move them again. Often, fire is hidden under blocks as a stealth system, referred to often as a hot block.
Fire that Chip discovers before anything else on the lower layer will not kill Chip regardless of whether he has fire boots when he first steps on it, and will still function the same towards monsters. If a block were to be pushed onto the hidden fire, the block works just as if the fire had started the level underneath it.