VGA — 3D RPG

VGA is a 3D RPG in Zig. A CPU rasterizer draws it into a buffer, with no GPU acceleration.

• The project started in 2025.
• The language is Zig 0.16.
• The rendering is a CPU rasterizer. It does not use the GPU.
• The animation uses a primitive two-link IK (forearm and arm, ankle and thigh).
• The game simulates the full map, not only the area around the player.

AGENTS.md is the full reference: the build and run commands, the presets, the benchmarks, the architecture and the index of the docs in doc/.

References

• SpehleonLP/IK-Guide — Inverse Kinematics Solvers

Requirements

• Zig 0.16

Build

zig build

Run

zig build run --release=fast

The OpenGL blit path is on by default. To run the game with the CPU blit path:

zig build run -Dopengl=false --release=fast