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

43.997 KB engine + 1.130 MB resources
Size breakdown
index.html 1.252 KB
index_simd.wasm 35.133 KB
index.wasm 35.055 KB
index_simd.js 7.612 KB
index.js 7.607 KB
Engine 43.997 KB
assets/atlas_demo.ntpack 1.130 MB
Resources 1.130 MB
Total 1.173 MB
Shape Renderer Bench

Shape Renderer Bench

41.176 KB engine
Size breakdown
index.html 1.256 KB
index_simd.wasm 32.629 KB
index.wasm 32.474 KB
index_simd.js 7.291 KB
index.js 7.286 KB
Engine 41.176 KB
Total 41.176 KB
Bunnymark

Bunnymark

359.591 KB engine + 830.214 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 350.375 KB
index.wasm 334.439 KB
index_simd.js 7.961 KB
index.js 7.956 KB
Engine 359.591 KB
assets/bunnymark_hd.ntpack 815.432 KB
assets/bunnymark_sd.ntpack 14.782 KB
Resources 830.214 KB
Total 1.162 MB
RTT Showcase

RTT Showcase

144.170 KB engine + 9.399 KB resources
Size breakdown
index.html 1.256 KB
index_simd.wasm 135.215 KB
index.wasm 134.511 KB
index_simd.js 7.699 KB
index.js 7.694 KB
Engine 144.170 KB
assets/rtt_showcase.ntpack 9.399 KB
Resources 9.399 KB
Total 153.569 KB
9-Slice Scaling

9-Slice Scaling

136.251 KB engine + 17.689 KB resources
Size breakdown
index.html 1.253 KB
index_simd.wasm 127.018 KB
index.wasm 125.696 KB
index_simd.js 7.980 KB
index.js 7.976 KB
Engine 136.251 KB
assets/slice9_demo.ntpack 17.689 KB
Resources 17.689 KB
Total 153.940 KB
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
Sponza

Sponza

337.977 KB engine + 68.462 MB resources
Size breakdown
index.html 1.250 KB
index_simd.wasm 328.912 KB
index.wasm 312.915 KB
index_simd.js 7.814 KB
index.js 7.810 KB
Engine 337.977 KB
assets/sponza_core.ntpack 3.180 KB
assets/sponza_full.ntpack 59.395 MB
assets/sponza_geo.ntpack 3.488 MB
assets/sponza_tex.ntpack 5.576 MB
Resources 68.462 MB
Total 68.792 MB
Text Rendering

Text Rendering

53.361 KB engine + 7.583 MB resources
Size breakdown
index.html 1.252 KB
index_simd.wasm 44.471 KB
index.wasm 42.779 KB
index_simd.js 7.639 KB
index.js 7.634 KB
Engine 53.361 KB
assets/text_base.ntpack 12.163 KB
assets/text_cjk.ntpack 7.571 MB
Resources 7.583 MB
Total 7.635 MB
Spinning Shapes

Spinning Shapes

41.242 KB engine
Size breakdown
index.html 1.255 KB
index_simd.wasm 32.806 KB
index.wasm 33.040 KB
index_simd.js 7.182 KB
index.js 7.177 KB
Engine 41.242 KB
Total 41.242 KB
Textured Quad

Textured Quad

45.692 KB engine + 782.026 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 36.825 KB
index.wasm 37.414 KB
index_simd.js 7.612 KB
index.js 7.607 KB
Engine 45.692 KB
assets/base.ntpack 774 B
assets/lenna_hires.ntpack 777.788 KB
assets/lenna_pixel.ntpack 3.482 KB
Resources 782.026 KB
Total 827.719 KB
3D UI

3D UI

150.760 KB engine + 16.545 KB resources
Size breakdown
index.html 1.254 KB
index_simd.wasm 141.484 KB
index.wasm 140.896 KB
index_simd.js 8.021 KB
index.js 8.017 KB
Engine 150.760 KB
assets/ui_3d_demo.ntpack 16.545 KB
Resources 16.545 KB
Total 167.305 KB
UI Showcase

UI Showcase

208.318 KB engine + 122.137 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 198.824 KB
index.wasm 199.053 KB
index_simd.js 8.239 KB
index.js 8.234 KB
Engine 208.318 KB
assets/ui_showcase.ntpack 122.137 KB
Resources 122.137 KB
Total 330.455 KB