Paper.io 2 is all about trying to dominate the map just like in the original Paper.io by clipping your opponents and turning as much of the map your color as possible, but you can move in all directions in this game, unlike in the others of its kind.
Skins have been added to the game by Voodoo, so now you can unlock a multitude of them. Read on for a full list of the hidden skins and how to unlock them!
Moose Skin: Cover at least 10% of the map in one round.
Elephant Skin: Cover at least 25% of the map in one round
Giraffe Skin: Cover at least 50% of the map in a single round (note: all of these skins can be unlocked in the same round if you get 50% without ever having topped 10% before)
Hippo Skin: Cover at least 80% of the map
Unicorn Skin: Cover the entire map in one shot.
Cheeseburger skin: Play the game one time.
Box truck skin: Play the game for three days in a row.
Airplane skin: Play the game for seven days in a row.
Duck skin: Kill ten players total in one single game.
Pig skin: Kill 25 players total in one single game.
Tank skin: Kill 50 players in one single game.
Donut/Doughnut skin: Kill the king (the player with the highest percentage of the map covered)
Toilet skin: Kill three players in a row, meaning one right after the other.
Rhinoceros skin: Stay outside of your area for five secondsin a row.
Paint Roller/Draw.io skin: Stay outside of your area for ten seconds in a row.
Mouse skin: Stay outside of your area for fifteen seconds in a row.
Car skin: Cover 10% of the map with no kills.
Woolly Mammoth skin: Cover 25% of the map with zero kills.
Police Car skin: Cover 50% of the map with zero kills. (might seem impossible but the easiest way to do this is to let other players kill each other)
Cube with a hole in it: Use the revive ten times total to unlock this one (the video ad revive if you have an internet connection)