Neotolis Engine

Minimalist game engine for Web/WASM

Tiny output · Zero magic · Code-first · C17

Philosophy

  • Code-first

    Game controls the main loop. The engine gives building blocks, not a pipeline.

  • Explicit over implicit

    You see everything. No hidden behavior, no magic behind the scenes.

  • Keep it simple

    Less code is better. Simplify further when possible.

  • Tiny size

    Every byte counts. Binary size tracked on every PR.

  • Set of modules

    Use only what you need.

  • Prebuilt assets

    Source formats packed into binaries at build time. Runtime loads packs on demand, no parsers.

Features

  • Code-first — Game controls the main loop. The engine gives building blocks, not a pipeline.
  • Explicit over implicit — You see everything. No hidden behavior, no magic behind the scenes.
  • Keep it simple — Less code is better. Simplify further when possible.
  • Tiny size — Every byte counts. Binary size tracked on every PR.
  • Set of modules — Use only what you need.
  • Prebuilt assets — Source formats packed into binaries at build time. Runtime loads packs on demand, no parsers.

Examples

Atlas Packing

Atlas Packing

52.894 KB engine + 1.130 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 43.402 KB
index.wasm 43.441 KB
index_simd.js 8.286 KB
index.js 8.281 KB
Engine 52.894 KB
assets/atlas_demo.ntpack 1.130 MB
Resources 1.130 MB
Total 1.181 MB
Shape Renderer Bench

Shape Renderer Bench

46.675 KB engine
Size breakdown
index.html 1.209 KB
index_simd.wasm 38.048 KB
index.wasm 38.153 KB
index_simd.js 7.418 KB
index.js 7.413 KB
Engine 46.675 KB
Total 46.675 KB
Bunnymark

Bunnymark

216.629 KB engine + 830.220 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 206.712 KB
index.wasm 200.887 KB
index_simd.js 8.709 KB
index.js 8.704 KB
Engine 216.629 KB
assets/bunnymark_hd.ntpack 815.471 KB
assets/bunnymark_sd.ntpack 14.749 KB
Resources 830.220 KB
Total 1.022 MB
Hello

Hello

12.878 KB engine
Size breakdown
index.html 1.201 KB
index_simd.wasm 8.433 KB
index.wasm 8.138 KB
index_simd.js 3.244 KB
index.js 3.239 KB
Engine 12.878 KB
Total 12.878 KB
RTT Showcase

RTT Showcase

112.910 KB engine + 9.345 KB resources
Size breakdown
index.html 1.209 KB
index_simd.wasm 103.280 KB
index.wasm 104.578 KB
index_simd.js 8.421 KB
index.js 8.416 KB
Engine 112.910 KB
assets/rtt_showcase.ntpack 9.345 KB
Resources 9.345 KB
Total 122.255 KB
9-Slice Scaling

9-Slice Scaling

94.972 KB engine + 17.606 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 85.205 KB
index.wasm 85.737 KB
index_simd.js 8.560 KB
index.js 8.555 KB
Engine 94.972 KB
assets/slice9_demo.ntpack 17.606 KB
Resources 17.606 KB
Total 112.578 KB
Spinning Shapes

Spinning Shapes

45.525 KB engine
Size breakdown
index.html 1.207 KB
index_simd.wasm 37.239 KB
index.wasm 37.505 KB
index_simd.js 7.079 KB
index.js 7.074 KB
Engine 45.525 KB
Total 45.525 KB
Sponza

Sponza

209.686 KB engine + 65.890 MB resources
Size breakdown
index.html 1.202 KB
index_simd.wasm 199.822 KB
index.wasm 195.111 KB
index_simd.js 8.661 KB
index.js 8.656 KB
Engine 209.686 KB
assets/sponza_core.ntpack 3.222 KB
assets/sponza_full.ntpack 57.965 MB
assets/sponza_geo.ntpack 2.344 MB
assets/sponza_tex.ntpack 5.578 MB
Resources 65.890 MB
Total 66.095 MB
Text Rendering

Text Rendering

51.997 KB engine + 7.583 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 42.456 KB
index.wasm 42.583 KB
index_simd.js 8.336 KB
index.js 8.331 KB
Engine 51.997 KB
assets/text_base.ntpack 12.110 KB
assets/text_cjk.ntpack 7.571 MB
Resources 7.583 MB
Total 7.634 MB
Textured Quad

Textured Quad

52.851 KB engine + 781.960 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 43.356 KB
index.wasm 43.920 KB
index_simd.js 8.286 KB
index.js 8.281 KB
Engine 52.851 KB
assets/base.ntpack 708 B
assets/lenna_hires.ntpack 777.788 KB
assets/lenna_pixel.ntpack 3.480 KB
Resources 781.960 KB
Total 834.811 KB
UI Showcase

UI Showcase

177.068 KB engine + 122.157 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 167.081 KB
index.wasm 168.904 KB
index_simd.js 8.779 KB
index.js 8.774 KB
Engine 177.068 KB
assets/ui_showcase.ntpack 122.157 KB
Resources 122.157 KB
Total 299.226 KB
3D UI

3D UI

112.816 KB engine + 16.586 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 103.050 KB
index.wasm 104.312 KB
index_simd.js 8.560 KB
index.js 8.555 KB
Engine 112.816 KB
assets/ui_3d_demo.ntpack 16.586 KB
Resources 16.586 KB
Total 129.402 KB