I recently stumbled upon 'Lights Out' while browsing horror flicks, and I was surprised by how many platforms actually have it! If you're into subscription services, HBO Max currently has it available for streaming—great if you already have a membership. For rental or purchase, Amazon Prime Video, Google Play, and YouTube Movies offer it in HD. I personally prefer renting because horror movies are a one-time thrill for me, but if you love rewatching scare scenes, buying might be worth it.
A friend also mentioned checking out smaller platforms like Vudu or Apple TV, which sometimes have special deals. Just make sure to compare prices because they fluctuate. Oh, and if you're into physical copies, local libraries might have DVDs—old school, but free! The film's pacing is fantastic, so wherever you watch it, prepare for some legit jumpscares.