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

51.881 KB engine + 1.130 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 42.424 KB
index.wasm 42.301 KB
index_simd.js 8.252 KB
index.js 8.247 KB
Engine 51.881 KB
assets/atlas_demo.ntpack 1.130 MB
Resources 1.130 MB
Total 1.180 MB
Shape Renderer Bench

Shape Renderer Bench

45.063 KB engine
Size breakdown
index.html 1.209 KB
index_simd.wasm 36.705 KB
index.wasm 36.916 KB
index_simd.js 7.148 KB
index.js 7.144 KB
Engine 45.063 KB
Total 45.063 KB
Bunnymark

Bunnymark

213.021 KB engine + 830.220 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 203.421 KB
index.wasm 199.316 KB
index_simd.js 8.392 KB
index.js 8.387 KB
Engine 213.021 KB
assets/bunnymark_hd.ntpack 815.471 KB
assets/bunnymark_sd.ntpack 14.749 KB
Resources 830.220 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

110.665 KB engine + 9.345 KB resources
Size breakdown
index.html 1.209 KB
index_simd.wasm 101.052 KB
index.wasm 102.385 KB
index_simd.js 8.404 KB
index.js 8.399 KB
Engine 110.665 KB
assets/rtt_showcase.ntpack 9.345 KB
Resources 9.345 KB
Total 120.010 KB
9-Slice Scaling

9-Slice Scaling

92.877 KB engine + 17.606 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 83.160 KB
index.wasm 83.749 KB
index_simd.js 8.510 KB
index.js 8.505 KB
Engine 92.877 KB
assets/slice9_demo.ntpack 17.606 KB
Resources 17.606 KB
Total 110.483 KB
Sponza

Sponza

208.781 KB engine + 65.890 MB resources
Size breakdown
index.html 1.202 KB
index_simd.wasm 199.207 KB
index.wasm 194.306 KB
index_simd.js 8.372 KB
index.js 8.367 KB
Engine 208.781 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
Spinning Shapes

Spinning Shapes

44.025 KB engine
Size breakdown
index.html 1.207 KB
index_simd.wasm 35.799 KB
index.wasm 36.015 KB
index_simd.js 7.020 KB
index.js 7.015 KB
Engine 44.025 KB
Total 44.025 KB
Textured Quad

Textured Quad

52.147 KB engine + 781.960 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 42.688 KB
index.wasm 42.723 KB
index_simd.js 8.252 KB
index.js 8.247 KB
Engine 52.147 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 834.107 KB
Text Rendering

Text Rendering

49.864 KB engine + 7.583 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 40.389 KB
index.wasm 40.909 KB
index_simd.js 8.271 KB
index.js 8.266 KB
Engine 49.864 KB
assets/text_base.ntpack 12.110 KB
assets/text_cjk.ntpack 7.571 MB
Resources 7.583 MB
Total 7.631 MB
3D UI

3D UI

110.815 KB engine + 16.586 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 101.080 KB
index.wasm 102.695 KB
index_simd.js 8.528 KB
index.js 8.523 KB
Engine 110.815 KB
assets/ui_3d_demo.ntpack 16.586 KB
Resources 16.586 KB
Total 127.401 KB
UI Showcase

UI Showcase

176.130 KB engine + 122.157 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 166.169 KB
index.wasm 168.491 KB
index_simd.js 8.753 KB
index.js 8.748 KB
Engine 176.130 KB
assets/ui_showcase.ntpack 122.157 KB
Resources 122.157 KB
Total 298.287 KB