Heartopia is having a much busier Saturday on Steam as the free-to-play life sim opens its Call of Whales Fashionwave and starts pointing players toward next week's Sanrio Characters collaboration.
At Gamers Now's 17:50 UTC check of Steam's public most-played data on July 11, Heartopia had 17,916 players in-game. At the same evening checkpoint, the game had 10,406 players on Friday, 9,424 on Thursday and 8,510 on Wednesday. It also reached 22,069 players earlier Saturday afternoon, putting the live audience well above its recent weekday pattern.
Heartopia is developed and published by XD. Its Steam store page describes it as a multiplayer life sim about building a home, exploring hobbies, customizing outfits, keeping pets and spending time with other players in Heartopia Town.
Call of Whales gives Heartopia players a new place to go
The Steam rise lands as XD launches the Call of Whales Fashionwave, which runs from July 11 at 6:00 server time until August 22 at 5:59 server time. The update opens Whalefall Canyon, a deep-sea area reached through a portal near Whale Mountain, and adds expedition rewards including ingredients, the Seaside Holiday outfit set and the Inflatable Whale House furniture set.
XD says players can also unlock access to seamounts after completing Whalefall Canyon expedition quests. Those underwater spaces support blueprints, co-builds, visits, fish schools and photo opportunities, so the update is aimed directly at Heartopia's building and customization audience.

The timing gives the player-count movement a clearer shape than a normal weekend lift. Heartopia's public Steam count climbed during the same window as a limited-time update with new exploration space and rewards, while the game stayed visible in Steam's lower most-played band with a weekly peak of 23,352 players.
Sanrio Characters arrive next week
Heartopia has another event queued up behind Call of Whales. In a separate Steam announcement, XD says the Heartopia x Sanrio Characters collaboration begins on July 17 with Cinnamoroll, Kuromi and My Melody. A pre-event started July 10, letting players log in daily to light puzzle pieces and claim rewards including Exhibition Passes and collaboration wallpapers.
The latest Sanrio Characters PV post says the collaboration will include a Speciality Exhibition, Furniture Fair and Sanrio Characters Gacha Machine. That gives Heartopia a second near-term reason for players to return after the underwater Fashionwave opens.
Heartopia's move is still happening in the lower half of Steam's most-played chart, far below the platform's usual heavyweights. The notable part is the week-over-week player context: a smaller cozy life sim is drawing roughly double its recent evening audience while a themed update goes live and a licensed collaboration is about to begin.
