We are using the fol­lo­wing open source projects/libraries in our games:

Howler.js

howler.js, which is licen­sed under the MIT licen­se (see below).

howler.js copy­right noti­ce and licen­se:
Copy­right © 2013–2019 James Simp­son and Gold­Fire Stu­di­os, Inc.

Per­mis­si­on is her­e­by gran­ted, free of char­ge, to any per­son obtai­ning a copy of this soft­ware and asso­cia­ted docu­men­ta­ti­on files (the „Soft­ware“), to deal in the Soft­ware wit­hout restric­tion, inclu­ding wit­hout limi­ta­ti­on the rights to use, copy, modi­fy, mer­ge, publish, dis­tri­bu­te, sub­li­cen­se, and/or sell copies of the Soft­ware, and to per­mit per­sons to whom the Soft­ware is fur­nis­hed to do so, sub­ject to the fol­lo­wing con­di­ti­ons:

The above copy­right noti­ce and this per­mis­si­on noti­ce shall be inclu­ded in all copies or sub­stan­ti­al por­ti­ons of the Soft­ware.

THE SOFTWARE IS PROVIDEDAS IS“, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.