Jumanji

When siblings Judy and Peter discover an enchanted board game that opens the door to a magical world, they unwittingly invite Alan -- an adult who's been trapped inside the game for 26 years -- into their living room. Alan's only hope for freedom is to finish the game, which proves risky as all three find themselves running from giant rhinoceroses, evil monkeys and other terrifying creatures.

This is a current release, so it is not free to download. The legal options are renting, buying or streaming it on a service you already pay for. Every link goes to the store that holds the rights.