Hollow Knight: Silksong has been a massive success for indie studio Team Cherry, with the game peaking at over 580,000 concurrent players on Steam alone over the weekend.

The details:

After years of anticipation, Silksong was released on September 4, giving fans a chance to play the long-awaited sequel. Some were forced to wait a little longer, however, due to the sheer volume of traffic from those looking to download the platformer, which caused several technical issues on Xbox, PlayStation, Nintendo, and Valve's storefronts.
Now that players can get their hands on the game, it's unsurprisingly become one of the most popular titles on Steam, with a peak of 587,150 concurrent players on Saturday. While there are no figures for the number of players on consoles, it is likely to be in the hundreds of thousands, with its day-one launch on Game Pass helping boost its numbers further.
While most reviews have been positive, with praise for its improved gameplay, plot, and visuals over its predecessor, there have been a few issues. Notably, Chinese players have given the majority of negative feedback, citing shortcomings with the quality of its simplified-Chinese localization, which Team Cherry's Matthew Griffin has stated the studio will work to improve. "To our Chinese-speaking fans: We appreciate you letting us know about quality issues with the current Simplified Chinese translation of Hollow Knight: Silksong," Griffin wrote on X. "We'll be working to improve the translation over the coming weeks. Thanks for your feedback and support."
Silksong has also sparked discussions about the impact it may have on future indie game pricing, as the highly anticipated title costs only $20. The low price has been met with praise, even prompting pirates to request that fans simply buy the game legally, but some believe the price is so cheap that it may cause players to have unrealistic expectations for future indie releases.

Hollow Knight: Silksong peaks at over 580,000 concurrent players on Steam