We are a small community of developers passionate about Hearthstone. We build simulators and other tools around and for the game.

Are you interested? Come join us on the #hearthsim IRC channel on the Freenode network, or join our mirrored room on Gitter.

Our core projects:

We also host:

Our tools:

Resources we work on:

Everything happens in the #hearthsim IRC channel. Logs are available on Gitter.

2017 Update

The past six months have been some of the busiest ones at HearthSim, which is incidentally why updates on this blog have been sparse. I thought it was about time I gave an update on what we’ve been up to!

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Fast Hearthstone Log Parsing

A few months ago, Blizzard added a “PowerTaskList” log to the Power.log file. It’s an interesting addition: Rather than log the game state updates, it logs the animation queue - in other words, in PowerTaskList, each game state delta block is logged as it happens on screen in the Hearthstone client.

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HSReplay 1.1 Released

HSReplay 1.1 has been released. This update fixes misuses of some attributes, adds some game/player metatada and removes the playerID concept from HSReplay itself, forcing usage of entity IDs instead.

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On the state of the game

There’s been a bit of a riot on the Hearthstone subreddit lately. A critical mass of complaints about the game, that’s gotten several content producers to contribute to the discussion and reveal that they, too, are burned out.

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