Slay the Spire 2 sold 3 million copies just a week after launch, with 25 million runs already done and dusted. To put that in perspective: those are real numbers from a tiny Australian indie studio competing directly against major publishers on Steam's bestseller list. The game released on 5 March and hit that milestone by Friday, 13 March.
This is no small feat. Slay the Spire 2 became the biggest roguelike launch in Steam history in peak concurrent players, with three million copies sold in that period. For context, Mewgenics sold 1 million in the same period, and that was also considered a hit. Slay the Spire 2 is running circles around its peers.
Mega Crit co-founder Casey Yano responded by saying "The response to Early Access has been incredible" and joked that "Even though I threw out my back from overworking, I'm feeling high in spirits. Thank you to the team for dealing with my constant shenanigans and working extra during this busy rush!" The studio spent five years building this sequel, and players have already validated that investment in spectacular fashion.
What comes next
The real question is whether Mega Crit can sustain momentum through the early access phase without overpromising. The team won't give a specific timeline or roadmap for high-level content aside from what they've already confirmed: alternate acts for acts 2 and 3, more cards, events, and other content. They're also planning quality-of-life improvements for multiplayer, Steam Workshop support, a leaderboard for friends only, an overhaul of the badge and scoring system, balance patches and much more.
The discipline of that approach matters. Too many early access games stumble when developers either overshoot their roadmap or abandon it entirely. Mega Crit is being pragmatic: sketch the direction, release features when they're ready, not according to a calendar.
Board game expansion features bosses as playable characters
Beyond the video game, Mega Crit is mining the Slay the Spire universe for expansion across multiple formats. The Kickstarter campaign for the Slay the Spire board game Downfall expansion launches on 24 March, allowing players to play as some of the Spire's infamous bosses. The expansion is based on the iconic community mod for Slay the Spire 1, allowing you and your friends to play as some of the Spire's infamous bosses.
A 2xLP vinyl of the original game's soundtrack was also released, including 4 psych rock versions of classic tracks. Meanwhile, Fangamer will launch a new collection of Slay the Spire 2 merchandise on 17 March at 10 a.m. PDT, including a t-shirt featuring the full StS2 roster, pins, and an adorable sticker set designed by Justin Yu.
What's striking here is the franchise's momentum across formats. The original Slay the Spire, released in 2019, became the video game that popularised a trend of roguelike deck-building video games. The sequel is capitalising on that foundation without betting everything on the digital version.
Players remain patient despite the game still being in early access. The game will evolve over time with direct player feedback. For a genre built on repetition and incremental discovery, that willingness to iterate beats a false finish line every time.