Pick on your phone, watch on the TV
Find the title on CucuFlix, check Where to watch, then open that service's app on your smart TV, Fire TV Stick, Android TV box, Apple TV or console.
Casting
From the service's phone app, the cast icon sends the film to a Chromecast or AirPlay screen. Your phone becomes the remote and CucuFlix stays open for the next pick.
On a laptop
On a wide screen CucuFlix shows six posters per row and the Top 10 column on the right. The film then plays in your browser on the service's site. A spectacle like Kalki 2898-AD or Dune: Part Two deserves the biggest screen in the house.