Promotional image for the Super Demo.
Benefits of purchasing the full version.
The Super Demo is an unlimited free version of the game that players can play to "try before they buy". Progression earned while playing will carry over to a purchased copy of the game, should the player decide to buy the full version. Progression includes earned XP, Animal DNA and Super Serum, as well as any unlocked cosmetics.
Demo players can play all modes of the game, but they are unable to choose who they team up with from the main menu lobby. They are only able to have randomly chosen partners in duos/squads when they join a game. Players can attempt to join up with their friends by joining lobbies at the same time, but it is not a guarantee.
Demo players are restricted to four Animals given to all players for free - 
Super Fox, 
Super Bear, 
Super Skullcat and 
Super Tiger. They cannot unlock other animals and breeds, nor use cosmetics (e.g. Apparel, Weapon Skins, Emotes), which are reserved for purchasing the game.
An important distinction is that the Super Demo is not a free to play version, it is a demo, meant to give players a taste of the game to see if they wish to purchase it.