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

52.822 KB engine + 1.130 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 43.120 KB
index.wasm 43.135 KB
index_simd.js 8.497 KB
index.js 8.492 KB
Engine 52.822 KB
assets/atlas_demo.ntpack 1.130 MB
Resources 1.130 MB
Total 1.181 MB
Shape Renderer Bench

Shape Renderer Bench

46.458 KB engine
Size breakdown
index.html 1.209 KB
index_simd.wasm 37.838 KB
index.wasm 37.911 KB
index_simd.js 7.411 KB
index.js 7.406 KB
Engine 46.458 KB
Total 46.458 KB
Bunnymark

Bunnymark

213.960 KB engine + 830.220 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 204.054 KB
index.wasm 198.912 KB
index_simd.js 8.698 KB
index.js 8.693 KB
Engine 213.960 KB
assets/bunnymark_hd.ntpack 815.471 KB
assets/bunnymark_sd.ntpack 14.749 KB
Resources 830.220 KB
Total 1.020 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

110.044 KB engine + 9.345 KB resources
Size breakdown
index.html 1.209 KB
index_simd.wasm 100.427 KB
index.wasm 102.409 KB
index_simd.js 8.408 KB
index.js 8.403 KB
Engine 110.044 KB
assets/rtt_showcase.ntpack 9.345 KB
Resources 9.345 KB
Total 119.389 KB
9-Slice Scaling

9-Slice Scaling

92.218 KB engine + 17.606 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 82.461 KB
index.wasm 83.325 KB
index_simd.js 8.550 KB
index.js 8.545 KB
Engine 92.218 KB
assets/slice9_demo.ntpack 17.606 KB
Resources 17.606 KB
Total 109.824 KB
Sponza

Sponza

209.191 KB engine + 65.890 MB resources
Size breakdown
index.html 1.202 KB
index_simd.wasm 199.346 KB
index.wasm 194.752 KB
index_simd.js 8.644 KB
index.js 8.639 KB
Engine 209.191 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

51.650 KB engine + 7.583 MB resources
Size breakdown
index.html 1.205 KB
index_simd.wasm 41.896 KB
index.wasm 42.739 KB
index_simd.js 8.550 KB
index.js 8.545 KB
Engine 51.650 KB
assets/text_base.ntpack 12.110 KB
assets/text_cjk.ntpack 7.571 MB
Resources 7.583 MB
Total 7.633 MB
Textured Quad

Textured Quad

52.728 KB engine + 781.960 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 43.022 KB
index.wasm 43.624 KB
index_simd.js 8.497 KB
index.js 8.492 KB
Engine 52.728 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 834.688 KB
Spinning Shapes

Spinning Shapes

45.263 KB engine
Size breakdown
index.html 1.207 KB
index_simd.wasm 36.986 KB
index.wasm 37.289 KB
index_simd.js 7.069 KB
index.js 7.064 KB
Engine 45.263 KB
Total 45.263 KB
UI Showcase

UI Showcase

174.549 KB engine + 122.157 KB resources
Size breakdown
index.html 1.208 KB
index_simd.wasm 164.571 KB
index.wasm 167.201 KB
index_simd.js 8.770 KB
index.js 8.765 KB
Engine 174.549 KB
assets/ui_showcase.ntpack 122.157 KB
Resources 122.157 KB
Total 296.706 KB
3D UI

3D UI

109.869 KB engine + 16.586 KB resources
Size breakdown
index.html 1.207 KB
index_simd.wasm 100.112 KB
index.wasm 102.146 KB
index_simd.js 8.550 KB
index.js 8.545 KB
Engine 109.869 KB
assets/ui_3d_demo.ntpack 16.586 KB
Resources 16.586 KB
Total 126.455 KB