I had to double check that this wasn’t a parody of a Japanese game, but no: Survival Penguin: Battle Royal is the real deal, the stuff that satirists hate, because it does their work for them.
Survival Penguin: Battle Royal casts players as penguins and other icy characters, aiming to knock each other off a glacier, into the freezing waters below. As the screenshots indicate, It’s unashamedly Japanese, and it’s probably fun to boot.
Even if it’s not, it’s currently free on the App store, until August 31st, so there’s not really a reason to not indulge in its unintended hilarity.