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

45.781 KB engine + 1.130 MB resources
Size breakdown
index.html 1.252 KB
index_simd.wasm 36.917 KB
index.wasm 36.873 KB
index_simd.js 7.612 KB
index.js 7.607 KB
Engine 45.781 KB
assets/atlas_demo.ntpack 1.130 MB
Resources 1.130 MB
Total 1.174 MB
Shape Renderer Bench

Shape Renderer Bench

41.204 KB engine
Size breakdown
index.html 1.256 KB
index_simd.wasm 32.657 KB
index.wasm 32.484 KB
index_simd.js 7.291 KB
index.js 7.286 KB
Engine 41.204 KB
Total 41.204 KB
Bunnymark

Bunnymark

359.626 KB engine + 830.214 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 350.410 KB
index.wasm 334.510 KB
index_simd.js 7.961 KB
index.js 7.956 KB
Engine 359.626 KB
assets/bunnymark_hd.ntpack 815.432 KB
assets/bunnymark_sd.ntpack 14.782 KB
Resources 830.214 KB
Total 1.162 MB
Hello

Hello

13.004 KB engine
Size breakdown
index.html 1.249 KB
index_simd.wasm 8.505 KB
index.wasm 8.206 KB
index_simd.js 3.250 KB
index.js 3.245 KB
Engine 13.004 KB
Total 13.004 KB
RTT Showcase

RTT Showcase

144.214 KB engine + 9.399 KB resources
Size breakdown
index.html 1.256 KB
index_simd.wasm 135.259 KB
index.wasm 134.540 KB
index_simd.js 7.699 KB
index.js 7.694 KB
Engine 144.214 KB
assets/rtt_showcase.ntpack 9.399 KB
Resources 9.399 KB
Total 153.613 KB
Spinning Shapes

Spinning Shapes

41.271 KB engine
Size breakdown
index.html 1.255 KB
index_simd.wasm 32.835 KB
index.wasm 33.056 KB
index_simd.js 7.182 KB
index.js 7.177 KB
Engine 41.271 KB
Total 41.271 KB
9-Slice Scaling

9-Slice Scaling

136.271 KB engine + 17.689 KB resources
Size breakdown
index.html 1.253 KB
index_simd.wasm 127.037 KB
index.wasm 125.715 KB
index_simd.js 7.980 KB
index.js 7.976 KB
Engine 136.271 KB
assets/slice9_demo.ntpack 17.689 KB
Resources 17.689 KB
Total 153.960 KB
Sponza

Sponza

338.716 KB engine + 65.887 MB resources
Size breakdown
index.html 1.250 KB
index_simd.wasm 329.651 KB
index.wasm 313.761 KB
index_simd.js 7.814 KB
index.js 7.810 KB
Engine 338.716 KB
assets/sponza_core.ntpack 3.180 KB
assets/sponza_full.ntpack 57.964 MB
assets/sponza_geo.ntpack 2.344 MB
assets/sponza_tex.ntpack 5.576 MB
Resources 65.887 MB
Total 66.218 MB
Text Rendering

Text Rendering

53.389 KB engine + 7.583 MB resources
Size breakdown
index.html 1.252 KB
index_simd.wasm 44.498 KB
index.wasm 42.800 KB
index_simd.js 7.639 KB
index.js 7.634 KB
Engine 53.389 KB
assets/text_base.ntpack 12.163 KB
assets/text_cjk.ntpack 7.571 MB
Resources 7.583 MB
Total 7.635 MB
Textured Quad

Textured Quad

47.442 KB engine + 781.959 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 38.575 KB
index.wasm 39.238 KB
index_simd.js 7.612 KB
index.js 7.607 KB
Engine 47.442 KB
assets/base.ntpack 705 B
assets/lenna_hires.ntpack 777.788 KB
assets/lenna_pixel.ntpack 3.482 KB
Resources 781.959 KB
Total 829.401 KB
3D UI

3D UI

150.787 KB engine + 16.545 KB resources
Size breakdown
index.html 1.254 KB
index_simd.wasm 141.512 KB
index.wasm 140.917 KB
index_simd.js 8.021 KB
index.js 8.017 KB
Engine 150.787 KB
assets/ui_3d_demo.ntpack 16.545 KB
Resources 16.545 KB
Total 167.332 KB
UI Showcase

UI Showcase

208.340 KB engine + 122.137 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 198.846 KB
index.wasm 199.099 KB
index_simd.js 8.239 KB
index.js 8.234 KB
Engine 208.340 KB
assets/ui_showcase.ntpack 122.137 KB
Resources 122.137 KB
Total 330.477 KB