Geez! Sounds crazy!! I would be absolutely gutted if a line just totally disappeared after spending hard work building up a win! lol! Just the thought of trying to work out the new moves Spider Linetris would create is hurting my head! lol! Sounds good though, maybe worth trying, as one line disappearing could turn a game completely on its head!

How about changing the square shape board to a Spiders Web shape! As BBW said, 12x12, & Web shaped would be cool. Have the middle space reserved for a spider there..and call the spider SPIDERM4TT!! lol :-)