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WOMBAT GAME STUDIO
Sumi Ninja
LEGAL · SUMI NINJA

Sumi Ninja open-source licenses

Sumi Ninja is built with open-source software. We thank its authors. The full notices and licence texts ship inside the game: open Credits → Open-source licenses.

Last updated: 2026-10-15 Version 1.0

1. Game engine

Axmol Engine 2.11.5 (MIT).

2. Graphics, audio and fonts

OpenAL Soft 1.23.1 (LGPL-2.1, shipped as a separate replaceable library; source: github.com/kcat/openal-soft), FreeType (FreeType License), libpng (libpng License), libwebp (BSD-3-Clause), libogg and libvorbis (BSD-3-Clause), minimp3 (CC0), stb_image (MIT), astc-encoder (Apache-2.0), Glad (MIT). Fonts: Dela Gothic One and Be Vietnam Pro (SIL Open Font License 1.1).

3. System libraries

zlib and minizip (zlib), {fmt} (MIT), pugixml (MIT), simdjson (Apache-2.0), xxHash (BSD-2-Clause), FastLZ (MIT), poly2tri (BSD-3-Clause), Clipper2 (BSL-1.0), ConvertUTF (Apache-2.0 with LLVM exception), yasio (MIT), websocket-parser (MIT), OpenSSL (Apache-2.0), curl (curl License), LLVM libc++ (Apache-2.0 with LLVM exception), Android cpufeatures, AndroidX and Media3 (Apache-2.0), Guava (Apache-2.0).

4. Advertising SDK

Google Mobile Ads SDK and Google User Messaging Platform, used under Google’s terms for those SDKs.

Questions? Email [email protected].