The packs contain five games and usually cost $30 each, but sometimes you can find them on sale for less. Here's how the Jackbox Party Pack works: One person has to purchase either one of seven Jackbox Party Packs, or one or more individual games, on Steam (for PC, Mac and Linux).
You can even mirror your Android or iOS device to your TV. Everyone plays through a web browser on their phones, so no apps or consoles are needed. For us, Jackbox Games is the holy grail of casual online gaming: Its multiplayer party games are simple to learn but still very entertaining to play, and it's also easy to stream or screen-share games from one device to a group for a virtual game night.