A Historic Launch

In a launch day that can only be described as a "critical hit," Mega Crit's highly anticipated sequel Slay the Spire 2 officially entered Steam Early Access on Thursday, March 5, 2026. The demand was so overwhelming it physically buckled Valve's storefront, causing the global cart system to crash for approximately 30 minutes as hundreds of thousands of players rushed to purchase the $24.99 title.

Within its first hour the sequel surpassed 100,000 concurrent players, but the momentum didn't stop there. By the 24-hour mark on Friday, March 6, the game reached a staggering peak of 430,456 concurrent players.

430,456

Peak Concurrent

~8×

Original's All-Time Peak

97%

Positive Reviews

30 min

Steam Cart Crash

The New Roguelike King

This peak is nearly eight times higher than the original game's all-time record of roughly 57,000 set in late 2025. Slay the Spire 2 now holds the record for the highest-ever concurrent player count for a roguelike on Steam, surpassing recent heavyweights like Hades 2 and Balatro. On its first full day it sat atop the Steam Sales Chart, even outperforming Bungie's Marathon in both revenue and active players.

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Dethroning the giants: On its first full day, Slay the Spire 2 topped the Steam Sales Chart and outperformed Bungie's Marathon in both revenue and active players on the platform.

The Day-One Experience

Despite the initial store crashes, the game itself launched to "Overwhelmingly Positive" reviews — a 97% positive rating. The reception is a vindication for Mega Crit, which famously migrated development to the Godot Engine following 2023's Unity pricing controversy. Early reports suggest the move was a masterstroke, with users praising "silky smooth" performance and improved Steam Deck battery life.

5 Characters at Launch

Returning trio Ironclad, Silent, and Defect join newcomers The Necrobinder and The Regent.

4-Player Co-op

Surprise online co-op mode lets squads coordinate routes and watch teammates' combats in real time.

Godot Engine

Post-Unity migration delivers smooth performance, faster load times, and better Steam Deck battery life.

"Mega Crit didn't just port their game to a new engine — they rebuilt the foundation and came out with something that feels better in every way. The co-op alone would have justified the sequel."
— Early Access reviewer, 97% "Overwhelmingly Positive" consensus

Technical Alert: Known Launch-Day Fixes

While the game is polished, some users have reported "instant crash" or "black screen" issues on startup. The community has identified two reliable workarounds:

Fix	Steps
OpenGL Fix	Steam → Properties → Launch Options → enter `--rendering-driver opengl3`
Admin Fix	Right-click Steam → "Run as Administrator" (Windows users)

In a charming nod to the original's Early Access days, several cards still feature "MS Paint-style" placeholder art. Mega Crit plans to update all art across the 1–2 year Early Access development cycle.

What to Watch

With 430K concurrent players on day one of Early Access, the full 1.0 launch could push Slay the Spire 2 into territory previously reserved for free-to-play titans. The 4-player co-op is already driving Twitch viewership past 300K, and the community modding scene — a pillar of the original's longevity — has not even begun. Mega Crit has delivered a critical hit on the roguelike genre; now the question is how high the ceiling goes.

Sources

Concurrent player data sourced from SteamDB. Review rating from the Steam store page. Historical roguelike peaks verified against SteamDB records for Hades 2, Balatro, and Slay the Spire. Marathon revenue comparison based on SteamSpy estimates and Steam Sales Chart placement.

Related Coverage

Steam

A Historic Launch

The New Roguelike King

The Day-One Experience

5 Characters at Launch

4-Player Co-op

Godot Engine

Technical Alert: Known Launch-Day Fixes

What to Watch

Sources

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