This is the 14550th most frequent Russian word.
пасхалку
An "easter egg" (hidden feature, message, or joke in media).
In this sentence, 'пасхалку' refers to a hidden detail or bonus content, often found in media or games.
Я нашёл пасхалку в этой видеоигре.
I found an easter egg in this video game.
Here, 'пасхалка' denotes a secret element intentionally included in artwork for discovery.
На этой картине спряталась пасхалка для внимательных зрителей.
An easter egg has been hidden in this painting for attentive viewers.
In this usage, 'пасхалка' describes a hidden message or reference included by creators for the audience.