Because I am a masochist, I read the Blob's whole Mario movie document. It probably deserves a long, more in-depth takedown, but is it terrible. It's a weird combination of autistic faithfulness to the source material, weird tonal choices, and the most hackneyed clichés.
The worst moment is probably this:
It's a cliché, it plays on an offensive ethnic stereotype (all Italians are murderous thug mobsters), and it's such an inappropriate tonal decision that, if this movie were actually made, the unintentional humor would be mocked for decades. It would be like a Wizard of Oz remake where the Wicked Witch of the West melting scene was replaced by the one from Full Metal Jacket where the Marines are all looking down at the writhing, mortally wounded sniper painfully hissing, "Shoot me." (Dorothy: "I'm not trying to run this squad. I'm just sayin' we can't leave her like this." Wicked Witch: "Melt... me... melt... me... melt me." Tin Man: "If you wanna waste her, go on, waste her.")
There's more. For a guy who actually does from time to time say some genuinely insightful things about film, this is amazingly terrible.