If you loved Piranha 3DD, try Chain Letter
A bridge between a film you've already seen and one most people haven't. Chain Letter has roughly 8.3× fewer votes than Piranha 3DD — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Theysit in Horror / Thriller territory. If that's the register that drew you to Piranha 3DD, the second film will land in a comparable space — through a different lens.
What Chain Letter is
Darkened smartphones buzzing on a stormy night a menacing message arrives six friends trapped in a deadly game Deon Taylor helms this tech-tinged horror.

