Fog Frog Wars

2026-04-01

We developed a custom 3D engine in Nim called NimLumen! We use this technology to develop Fog-Frog-Wars, a first person shooter where you try to find the frogs in the fog -- to kill them!

The next evolution in amphibian tactical combat

"We wanted to ask: what if Dark Souls, but with frogs?" -- Andreas Rumpf

Fog-Frog-Wars is an immersive first-person tactical shooter set in a procedurally generated medieval wilderness. Hunt elusive frogs concealed within NimLumen's industry-leading volumetric fog system — each encounter a test of patience, spatial awareness, and raw frog-finding instinct.

Key features:

• Advanced frog AI powered by a multi-agent behavior tree with emergent camouflage response and threat assessment
• Dynamic fog simulation — real-time Mie scattering means no two frog hunts feel the same
• Photo-realistic frog rendering with per-pore subsurface scattering and procedural wetness shaders
• Haptic frog feedback — feel every croak through your controller's low-frequency rumble layer
• Asymmetric multiplayer: one player is the frog
• Permadeath roguelite progression — when you die, you become a frog
• Accessibility options: colorblind mode, reduced fog density, frog radar (Easy), no frog radar (Nightmare)
• Ray-traced croaking — sound propagation fully simulated through the fog volume
• Early Access Q3 2026 — wishlists open now

Exclusive trailer

NimLumen

Next-generation photorealistic rendering engine — written entirely in Nim

Features:

• Spectral path tracing with full wavelength-dependent light transport and dispersion simulation
• Sparse Voxel Octree Global Illumination (SVOGI) for real-time infinite-bounce indirect lighting
• Physically Based Rendering (PBR) pipeline with a multi-lobe BRDF and energy conservation at all roughness levels
• Subsurface scattering (SSS) with a screen-space diffusion profile for organic materials (moss, bark, leaves)
• Procedural foliage system using stochastic LOD billboarding and wind-responsive skeletal simulation
• Volumetric atmospheric scattering via a single-pass Rayleigh/Mie integration on the GPU
• Virtual Shadow Maps (VSM) with 16k texel density and automatic page caching for infinite-range directional shadows
• Temporal Anti-Aliasing (TAA) with a neighborhood-clamped history buffer and sub-pixel jitter reprojection
• AI-assisted supersampling upscaler trained on Nim-native render targets (4x upscale, <2ms overhead)
• Nanite-inspired micro-polygon geometry streaming with visibility-driven cluster culling and on-the-fly LOD tessellation
• Screen-Space Ambient Occlusion (SSAO) augmented with ray-marched bent normals for contact hardening
• HDR display pipeline with filmic tone mapping and automatic scene-referred exposure adaptation

The tech will be open-sourced under the MIT license after the game's release!

Coming soon!