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

49.338 KB engine + 1.130 MB resources
Size breakdown
index.html 1.252 KB
index_simd.wasm 40.061 KB
index.wasm 39.959 KB
index_simd.js 8.025 KB
index.js 8.021 KB
Engine 49.338 KB
assets/atlas_demo.ntpack 1.130 MB
Resources 1.130 MB
Total 1.178 MB
Shape Renderer Bench

Shape Renderer Bench

43.455 KB engine
Size breakdown
index.html 1.256 KB
index_simd.wasm 34.884 KB
index.wasm 34.731 KB
index_simd.js 7.315 KB
index.js 7.311 KB
Engine 43.455 KB
Total 43.455 KB
Bunnymark

Bunnymark

357.565 KB engine + 830.214 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 347.933 KB
index.wasm 331.135 KB
index_simd.js 8.378 KB
index.js 8.373 KB
Engine 357.565 KB
assets/bunnymark_hd.ntpack 815.432 KB
assets/bunnymark_sd.ntpack 14.782 KB
Resources 830.214 KB
Total 1.160 MB
RTT Showcase

RTT Showcase

108.692 KB engine + 9.399 KB resources
Size breakdown
index.html 1.256 KB
index_simd.wasm 99.341 KB
index.wasm 98.939 KB
index_simd.js 8.096 KB
index.js 8.091 KB
Engine 108.692 KB
assets/rtt_showcase.ntpack 9.399 KB
Resources 9.399 KB
Total 118.092 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
9-Slice Scaling

9-Slice Scaling

95.037 KB engine + 17.689 KB resources
Size breakdown
index.html 1.253 KB
index_simd.wasm 85.388 KB
index.wasm 84.876 KB
index_simd.js 8.396 KB
index.js 8.392 KB
Engine 95.037 KB
assets/slice9_demo.ntpack 17.689 KB
Resources 17.689 KB
Total 112.727 KB
Spinning Shapes

Spinning Shapes

42.965 KB engine
Size breakdown
index.html 1.255 KB
index_simd.wasm 34.515 KB
index.wasm 34.534 KB
index_simd.js 7.195 KB
index.js 7.190 KB
Engine 42.965 KB
Total 42.965 KB
Sponza

Sponza

343.682 KB engine + 65.887 MB resources
Size breakdown
index.html 1.250 KB
index_simd.wasm 334.198 KB
index.wasm 320.464 KB
index_simd.js 8.233 KB
index.js 8.229 KB
Engine 343.682 KB
assets/sponza_core.ntpack 3.208 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 66.223 MB
Textured Quad

Textured Quad

51.370 KB engine + 781.959 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 42.090 KB
index.wasm 42.395 KB
index_simd.js 8.025 KB
index.js 8.021 KB
Engine 51.370 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 833.329 KB
Text Rendering

Text Rendering

51.996 KB engine + 7.583 MB resources
Size breakdown
index.html 1.252 KB
index_simd.wasm 42.705 KB
index.wasm 41.973 KB
index_simd.js 8.039 KB
index.js 8.034 KB
Engine 51.996 KB
assets/text_base.ntpack 12.163 KB
assets/text_cjk.ntpack 7.571 MB
Resources 7.583 MB
Total 7.634 MB
UI Showcase

UI Showcase

172.833 KB engine + 122.137 KB resources
Size breakdown
index.html 1.255 KB
index_simd.wasm 162.929 KB
index.wasm 164.775 KB
index_simd.js 8.649 KB
index.js 8.645 KB
Engine 172.833 KB
assets/ui_showcase.ntpack 122.137 KB
Resources 122.137 KB
Total 294.970 KB
3D UI

3D UI

109.958 KB engine + 16.545 KB resources
Size breakdown
index.html 1.254 KB
index_simd.wasm 100.271 KB
index.wasm 100.691 KB
index_simd.js 8.433 KB
index.js 8.428 KB
Engine 109.958 KB
assets/ui_3d_demo.ntpack 16.545 KB
Resources 16.545 KB
Total 126.503 KB