Arknights memes originate from the popular tower defense mobile game by Hypergryph, known for its deep lore and challenging strategic gameplay. The community frequently jokes about '0 Sanity,' a state where the player (the Doctor) has exhausted their in-game stamina, often depicted through chaotic or unhinged behavior. Other prevalent themes include the 'salt' resulting from the game's gacha recruitment system, the long-winded philosophical monologues of the character Kal'tsit, and the persistent community gag regarding the protagonist Amiya's resemblance to a donkey. These memes act as a shared language for players to express the frustrations of difficult tactical maps and the rewards of collecting powerful Operators.