Get full source access.
Ship on every engine.
Heathen builds professional, source-available toolkits for Godot, O3DE, Unity, and Unreal: gameplay systems, Steamworks, localisation, and more. Buy in once, and every version you download is yours to keep, forever.
Pick your engine. We’re already there.
Foundation-tier packages are FOSS on every engine we support. Toolkit-tier (Pro) coverage varies, check each engine’s own page for what’s shipped today.
FOSS forever. Pro for the ambitious stuff.
Every Foundation is free and open source: audit it, fork it, ship it. Toolkits add the deep, production-grade features on top. Get a perpetual license with any git-access purchase, see our License and Terms of Service for details.
Attribute Tag Engine
Zero-allocation state and action system on a flat-memory substrate. Bit-packed columns and branchless vector loops evaluate deterministic logic across hundreds of thousands of actors.
Data|LENS
A cache-aware in-memory simulation database for massive actor systems, a small, hot gameplay viewport over millions of rows of raw data.
Toolkit for Discord Social
Rich presence, lobby join, invites, and voice, built on Discord’s own Social SDK.
GameplayTags
A structured, hierarchy-aware tag system. Every stat, item, and state gets a searchable, testable, dot-path tag.
Lexicon Localisation
Localise anything: text, audio, images, models, tagged and tracked by GameplayTag, not buried in a spreadsheet.
Ogham Storyteller
Node-graph story authoring for writers. Localisation-aware by default, natively wired to GameplayTags and Lexicon.
Toolkit for Steamworks
Every feature of the Steamworks SDK, across all four engines, the reference-quality bar the rest of our catalogue is measured against.
Wyrd Simulation
A mass emergent-simulation layer: relational, epistemic, world-scale orchestration for open worlds with huge entity counts. Not shipped yet.
This isn’t a toy. It ships.
Every title on our Made with Heathen Steam Curator page shipped with our tools somewhere in the stack, from small solo projects to full studio productions, across every engine we support.
Building something with Heathen’s tools? Let us know and we’ll add it to the list.
Need a voice for your game?
Heathen also supports professional voice-over work with Voiced by Jodi.
Voiced by Jodi
Bright, clear, and engaging, with a natural warmth that draws listeners in, a neutral East Coast American accent suited to narration, characters, and UI voice work. Production-tested and available for direct booking, no agency overhead, no long turnaround.
You’re not building alone.
Discord
3,000+ developers. Live support for every toolkit, and a place to share what you’re building.
Knowledge Base & Dev Hub
Guides, references, and long-form articles, from getting started to deep engine-specific docs.
Steam Curator
Follow along with what the community is shipping, and see your own game featured once it’s live.
Buy once. Own it forever.
A subscription or a block of time gets you full source access while it’s active, and a
perpetual license to every version you actually downloaded, even after it ends.