The DM's toolkit for D&D 5e: prep, run and remember every session
GPU-accelerated rigid-body dynamics solver for robot learning
Stage
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Founded
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Based in
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Pricing model
Freemium
Open source
Pricing
Free plan with 10 credits and core generators; Pro at $12/month with 500 credits/month and unlimited campaigns; Ultra at $39/month with 2000 credits/month and higher resolution exports.
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Key features
Complete D&D 5e SRD reference library
Exportable content in PDF and Foundry JSON formats
3.8× PhysX throughput on 20 benchmarks geometric mean
13.0× performance on heterogeneous task mixtures
Per-environment work scheduling for efficiency
Reduced-coordinate articulation dynamics
Differentiable simulation
Rigid-deformable coupling support
Compliant and hydroelastic contact
62% less GPU memory than PhysX at matched batch size
3.90 million environment steps per second peak throughput
What makes it different
All generators save directly to campaign without retyping between tools
Characters, worlds and images are fully exportable and belong to the user
SRD content clearly marked and separated from original generation
Designed for heterogeneous workloads with different robots and tasks simulated together efficiently
Integrated into open-source Newton for seamless adoption without separate physics stack
Supports diverse physical interactions beyond rigid bodies
Enables scaling of diverse robot experience for general-purpose learning
RPG Builder
Steel