Mega Block Wild is a special wild symbol that lands on the reels as a massive, pre-formed block, typically 2x2, 3x3, or even larger. Unlike Expanding Wilds that land as a single symbol and then grow to cover a reel, a Mega Block Wild drops directly onto the grid in its full giant size. Because it covers multiple adjacent positions across different reels and rows simultaneously, it serves as a massive focal point for generating multi-line wins.