574K Concurrent Players Just Validated Our Niche Market Bet

We build Ziva, an AI agent for the Godot game engine. Last month, I wrote about why we bet on Godot's 5% market share instead of Unity's 51%.

Then Slay the Spire 2 launched. On Godot. And hit 574,638 concurrent players.

That number matters for us. Here's why.

The backstory

Slay the Spire 2 was being built in Unity. Mega Crit had two years of development done. Then Unity announced its per-install runtime fee in September 2023, and Mega Crit scrapped everything and rebuilt on Godot.

Their open letter to Unity: "We have never made a public statement before. That is how badly you fucked up."

Unity reversed course. Their CEO resigned. Mega Crit switched to Godot anyway.

On March 5, 2026, Slay the Spire 2 launched into Early Access and nearly broke Steam's all-time concurrent record. 574K players, built on the "hobby engine."

What this means for our market

When we started building Ziva, the most common pushback was: "Nobody ships serious games on Godot."

That argument is dead now. Here's what happened to Godot's commercial track record in the last 18 months:

• Brotato: $10.7M estimated revenue, 102K reviews at 96.6% positive
• Buckshot Roulette: 8 million copies sold, solo developer
• Dome Keeper: $6.1M revenue, just shipped multiplayer
• Slay the Spire 2: 574K concurrent, still in Early Access
• Road to Vostok: Solo dev, hit Steam top 10 on launch day

The total estimated revenue from top Godot games now exceeds $48 million. That's not counting Slay the Spire 2, which will probably dwarf all of them combined.

The second-order effect nobody talks about

Every blockbuster Godot game creates a wave of new Godot developers. Slay the Spire 2 alone drove thousands of "how do I learn Godot" searches. Those developers need tools. That's us.

The pattern we've seen:

1. Big Godot game ships
2. Gaming press covers it, mentions Godot
3. Developers search "godot tutorial" and "godot vs unity"
4. Some percentage of those developers install Godot
5. Some percentage of THOSE developers look for AI tools
6. They find Ziva

We didn't plan this funnel. The market created it for us. Our job is to be the best tool waiting at step 6.

The niche market lesson

I talked to a founder last month who was building a code generation tool for a major framework. His market was 100x bigger than ours. His competition was also 100x bigger. He was spending $15K/month on ads just to be visible.

We spend almost nothing on paid acquisition. Our SEO blog drives 42K impressions/month. The Godot community shares our content organically because there's nothing else like it in the ecosystem.

The math is simple: in a niche market with no competition, your cost of acquisition approaches zero. In a massive market with 50 competitors, you're in a bidding war for every user.

What I'd tell founders watching from the sidelines

If you're building a developer tool and wondering whether to go niche:

1. Find a market where the growth curve is steep, not just the total size. Godot games on Steam went from 47 in 2020 to 1,500+ in 2025. That's the kind of momentum you want to ride.

2. External validation is free marketing. We didn't pay for Slay the Spire 2 to launch on Godot. But every article about it validates our market thesis and sends developers our way.

3. Build for the next wave, not the current one. The developers installing Godot today because of Slay the Spire 2 will need tools in 3-6 months. Be ready when they arrive.

The 574K concurrent players number will fade from the news cycle. But the developers who switched to Godot because of it are permanent. And they're going to need help building their games.

That's where we come in.

ziva.sh