What Does 'APT.' Mean? The Korean Drinking Game Behind It

In October 2024, BLACKPINK's ROSÉ and American singer Bruno Mars released "APT.", a pop-punk single that went on to spend 45 weeks on the Billboard Hot 100 and was later named the world's biggest-selling single of 2025. Most listeners outside Korea heard the title as a made-up word or an abbreviation. It is neither.

"APT." is the Korean pronunciation of "apartment" — 아파트, apateu — and it is also the name of a hand-slapping drinking game Koreans have played at parties for years. The song's chorus is, almost literally, the chant that opens the game.

A pop-punk hit built on a party game

ROSÉ has said "APT." began almost by accident. In the studio with Bruno Mars, she taught her collaborators her favorite drinking game from home, calling it "simple" and something that "breaks the ice at any party." The room liked the chant enough to build a song around it.

She later told Vogue she felt uneasy about the idea afterward, recalling that she went home "kind of freaked out" wondering whether it was acceptable to release a single built around a drinking game. It came out anyway, on 18 October 2024 through The Black Label and Atlantic Records.

The single credits ROSÉ and Bruno Mars as co-writers alongside producers Cirkut, Omer Fedi, and Rogét Chahayed. It served as the lead single from her debut solo album and her first solo release since exiting her previous U.S. label the year before.

How the actual apartment game is played

The mechanic is simple enough to survive translation, which is part of why it works as a song. Players sit together and stack their hands over the middle of the table, one on top of another in random order.

A designated caller then shouts a number, standing in for the floor of an apartment building. Counting up from the bottom of the stack, players pull their hands out one at a time — whoever's hand lands on the called number has to drink.

• Everyone piles their hands in random order
• A caller shouts a random floor number
• The hand counted on that number drinks

Why a drinking game got a viral teaser before the song did

The rollout wasn't accidental. In September 2024, a month before release, ROSÉ posted video from a Saint Laurent afterparty in Paris showing her playing the apartment game with actresses Kiko Mizuhara, Laura Harrier, and Maika Monroe. The clip circulated as ordinary celebrity content, months before anyone connected it to a song.

By the time "APT." arrived, part of the international audience already recognized the hand game from ROSÉ's own social media. Learning it was also the source of the title gave the single, and the ritual behind it, a second wave of attention.

Why "apateu" carries more weight than a punchline

The word choice does more work than a simple pun. Since the 1980s, owning an apartment has functioned as a status symbol in South Korea, and the word shows up constantly in Korean dramas whenever characters talk about moving up in the world.

Today, roughly 60% of South Koreans live in apartment buildings, some more than 30 stories tall. A chant built around counting up imaginary floors lands differently in a country where which floor, and which building, a person can afford is a real social marker.

The only Korean words in the entire song are "apateu" and "geonbae" — a toast roughly equivalent to "cheers" — a minimal amount of Korean that still carries an entire drinking ritual with it.

Where games like this actually get played

Games like this one belong to a specific setting: hoesik, the after-work company dinner that functions as an extension of the Korean workday. Hoesik literally means "company meal," but it typically moves through several rounds — food first, then beer, then soju, at increasing intensity.

Drinking games are not incidental to hoesik; they are structural. In a workplace culture built on strict seniority, a game briefly flattens the hierarchy — a team leader who loses still has to drink, the same as the newest hire.

The apartment game is one of several Korean drinking games built around ordinary infrastructure. Others borrow their structure from the Seoul subway map or the Hangeul alphabet, turning familiar, everyday systems into party rules.

One rule sits above the games themselves: in Korean drinking culture, pouring your own drink is considered bad manners. Instead, drinkers watch each other's glasses and refill them, turning even a punishment round into a small act of care.

How a soloist without a K-pop label made a global hit

The song also marks a specific moment in ROSÉ's career that Korean fans were tracking closely and international fans mostly weren't. In December 2023, BLACKPINK renewed its group contract with YG Entertainment, but the four members did not renew their individual solo contracts, leaving each free to sign elsewhere.

This split matters because of how the agency system works in K-pop: a company typically controls an artist's training, image, and release schedule under one contract. ROSÉ instead signed her solo deal with The Black Label, a YG-affiliated label run by producer Teddy Park, and separately partnered with Atlantic Records for global distribution.

"APT." was her first release under that new arrangement and her first solo single in three years. It arrived roughly seven weeks before her debut solo album, Rosie, on 6 December 2024.

How the numbers rewrote K-pop's chart history

By the numbers, "APT." outperformed every previous K-pop single on the U.S. charts. It peaked at No. 3 on the Billboard Hot 100, the highest position any female K-pop soloist has reached on that chart.

Its 45-week run on the Hot 100 became the longest of any K-pop act's single, overtaking a record set months earlier by BTS member Jimin's "Who." It also broke a mark set by PSY's 2012 hit "Gangnam Style," logging 13 non-consecutive weeks in the Hot 100's top 10 versus Gangnam Style's 12.

On Billboard's Global Excl. U.S. chart, "APT." held No. 1 for 19 weeks, breaking Mariah Carey's 18-week record with "All I Want for Christmas Is You" for the longest No. 1 run by any song in that chart's history. It was later named IFPI's biggest-selling global single of 2025 — the first single with non-English lyrics to win that title.

The song set records elsewhere too. It debuted at No. 4 on the UK's Official Singles Chart, the highest position any female K-pop artist has reached there, and its music video passed 1 billion YouTube views in 105 days — among the fastest climbs to that mark in the platform's history.

What the song's success still hasn't settled

Not everything about the moment is resolved. It's unclear whether "APT." represents a one-off crossover or the start of a wider American audience for Korean-language hooks built around cultural specifics rather than translated lyrics.

It's also unclear how durable the drinking-game trend will be outside Korea — whether the hand-stacking game becomes a fixture at Western parties, or fades into a one-song novelty once the charts move on.

What is settled is that the title was never a coincidence. Every time a crowd chants "apateu, apateu" at a party outside Korea, it's repeating the same call used at hoesik tables for years — just without knowing yet whose turn it is to drink.

How 'APT.' rewrote K-pop's chart records

Frequently asked

What does APT. mean in the ROSÉ and Bruno Mars song?

APT. is the Korean pronunciation of "apartment" (아파트, apateu), and it's also the name of a hand-slapping drinking game Koreans play at parties.

How do you play the Korean apartment drinking game?

Players stack their hands over a table, a caller shouts a number standing in for a floor, and whoever's hand lands on that number when counted out has to drink.

How long was APT. on the Billboard Hot 100?

APT. spent 45 weeks on the Hot 100, the longest run of any K-pop single, and it peaked at No. 3.