Sensor Tower: 2026 Korea game report — downloads down 28%, revenue steady

From 2021 to 2026 Korean mobile game downloads fell from 540 million to 390 million, a 28% decline, while annual in‑app purchase revenue stayed roughly at the $5 billion level. Sensor Tower reports that revenue per download (RPD) reached an all‑time high during that period, and that publishers are placing heavier operational weight on retention, re‑engagement, live ops and monetization rather than raw new‑user acquisition. The report explicitly notes higher value extracted from existing and returning users as a structural shift in publisher strategy.

Genre-level shifts are clear in the numbers. Puzzle games grew from 17% to 32% of total downloads between 2021 and 2026, becoming the largest download share by genre. Strategy games increased their share of IAP revenue from 13% to 25%, while RPGs declined from 66% to 43% of IAP share. Sensor Tower calls out specific outliers: idle RPG downloads fell 30% year‑over‑year in the most recent 12‑month window even as their IAP revenue jumped 57%, and merge games posted a 21% rise in downloads with a 94% increase in IAP revenue.

Live operations are quantified as a central mechanic: Korea’s top mobile titles ran an average of 240 live events per month. The report gives concrete examples: Gossip Harbor increased monthly revenue more than 15× between January 2024 and August 2026 through continuous event runs and content updates. Nexon’s Maple Grow (Maple 키우기) sustained player engagement and monetization by linking events, using staged growth goals, and integrating competitive elements across event cycles. Those case studies sit alongside the raw event count to show how frequent, layered events map to measurable revenue gains.

Korean publishers’ overseas footprint widened as well. From 2021 to 2026 the share of worldwide downloads coming from outside Korea rose from 88% to 92%, and the portion of IAP revenue earned abroad climbed from 44% to 49%. Domestically, lightweight iterations of established IP and multiplatform strategies surfaced in the report as new growth avenues: titles and franchises mentioned include MapleStory, Cookie Run, Ragnarok, StoneAge, plus domestic hits like Maple Grow and Sol: Enchant that leverage familiar IP with lighter gameplay loops or cross‑platform releases.

The report also covers PC and console performance. Global packaged‑game sales on Steam, PlayStation and Xbox totaled roughly $32 billion between Q4 2025 and Q3 2026. Steam revenue rose from $7.27 billion in 2021 to $11.43 billion in 2026, a 57.3% increase, with cumulative platform sales split roughly 43% Steam and 57% PlayStation plus Xbox combined. Big Korean premium successes called out by Sensor Tower include: Ark Raiders (Embark Studio/Nexon) selling 20 million copies in seven months and generating more than $620 million in premium revenue; Pearl Abyss’s Red Desert surpassing $420 million in package sales and finishing as the top package seller across Steam, PlayStation and Xbox for two consecutive months; and Krafton’s Subnautica 2 posting over 5 million Steam wishlist adds pre‑launch, selling over 2 million copies on day one and peaking around 468,000 concurrent Steam players with a positive review rate above 90%.

Sensor Tower pulls those threads into platform comparisons and title‑level outcomes. NCSoft’s Aion2 used a cross‑platform launch to drive both mobile and PC traction: the mobile version hit #1 on Korea’s Apple App Store and Google Play download charts, and by September 2026 had accumulated $38 million in global mobile IAP revenue. After the October 2026 Steam launch, Aion2 exceeded 1 million users on day one and held the global sales #1 spot for a week; in‑game spend on Steam through October 18 reached about $29 million, roughly 78 times the mobile IAP revenue in the same period.