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

51.856 KB engine + 1.130 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 42.399 KB
index.wasm 42.278 KB
index_simd.js 8.252 KB
index.js 8.247 KB
Engine 51.856 KB
assets/atlas_demo.ntpack 1.130 MB
Resources 1.130 MB
Total 1.180 MB
Shape Renderer Bench

Shape Renderer Bench

45.044 KB engine
Size breakdown
index.html 1.209 KB
index_simd.wasm 36.687 KB
index.wasm 36.895 KB
index_simd.js 7.148 KB
index.js 7.144 KB
Engine 45.044 KB
Total 45.044 KB
Bunnymark

Bunnymark

213.054 KB engine + 830.153 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 203.454 KB
index.wasm 199.362 KB
index_simd.js 8.392 KB
index.js 8.387 KB
Engine 213.054 KB
assets/bunnymark_hd.ntpack 815.471 KB
assets/bunnymark_sd.ntpack 14.683 KB
Resources 830.153 KB
Total 1.019 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

110.696 KB engine + 9.290 KB resources
Size breakdown
index.html 1.209 KB
index_simd.wasm 101.083 KB
index.wasm 102.442 KB
index_simd.js 8.404 KB
index.js 8.399 KB
Engine 110.696 KB
assets/rtt_showcase.ntpack 9.290 KB
Resources 9.290 KB
Total 119.986 KB
9-Slice Scaling

9-Slice Scaling

92.904 KB engine + 17.545 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 83.188 KB
index.wasm 83.766 KB
index_simd.js 8.510 KB
index.js 8.505 KB
Engine 92.904 KB
assets/slice9_demo.ntpack 17.545 KB
Resources 17.545 KB
Total 110.449 KB
Spinning Shapes

Spinning Shapes

44.001 KB engine
Size breakdown
index.html 1.207 KB
index_simd.wasm 35.774 KB
index.wasm 35.990 KB
index_simd.js 7.020 KB
index.js 7.015 KB
Engine 44.001 KB
Total 44.001 KB
Sponza

Sponza

208.750 KB engine + 65.890 MB resources
Size breakdown
index.html 1.202 KB
index_simd.wasm 199.176 KB
index.wasm 194.274 KB
index_simd.js 8.372 KB
index.js 8.367 KB
Engine 208.750 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 66.094 MB
Text Rendering

Text Rendering

49.903 KB engine + 7.583 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 40.428 KB
index.wasm 40.939 KB
index_simd.js 8.271 KB
index.js 8.266 KB
Engine 49.903 KB
assets/text_base.ntpack 12.058 KB
assets/text_cjk.ntpack 7.571 MB
Resources 7.583 MB
Total 7.631 MB
Textured Quad

Textured Quad

52.121 KB engine + 781.960 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 42.661 KB
index.wasm 42.697 KB
index_simd.js 8.252 KB
index.js 8.247 KB
Engine 52.121 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 834.081 KB
3D UI

3D UI

110.812 KB engine + 16.413 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 101.076 KB
index.wasm 102.696 KB
index_simd.js 8.528 KB
index.js 8.523 KB
Engine 110.812 KB
assets/ui_3d_demo.ntpack 16.413 KB
Resources 16.413 KB
Total 127.225 KB
UI Showcase

UI Showcase

176.065 KB engine + 122.090 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 166.104 KB
index.wasm 168.431 KB
index_simd.js 8.753 KB
index.js 8.748 KB
Engine 176.065 KB
assets/ui_showcase.ntpack 122.090 KB
Resources 122.090 KB
Total 298.155 KB