This is getting dropped tomorrow alongside the 2nd Island Guardian and 3 basic route pokemon. The game play will be going through a dark forest, they will aim to encounter the three wild pokemon in the same way they did in the Treehouse gameplay. They're gonna play up to the encounter of the 2nd guardian, Tapu Tiki, a Psychic/Ghost pokemon.
The three pokemon are as follows, the evolution of Pikipek, Rapikk, A small ghost/grass type pokemon Folighast and the Rugby Monkey pokemon, Ruggappe.
After the gameplay a video will be uploaded to Youtube showing off these three Pokemon as well as the picture above and an Alolan Vileplume.