Google Noto Emoji
This game uses emoji graphics from the Google Noto Emoji project.
Source: https://github.com/googlefonts/noto-emoji
Copyright 2013 Google, Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0.
Full license: licenses/Apache-2.0.txt
License source: https://github.com/googlefonts/noto-emoji/blob/main/svg/LICENSE

Unit parameter icons (unmodified Google Noto Emoji v2.047 SVGs)
Local directory: assets/unit-stats/
Source: https://github.com/googlefonts/noto-emoji/tree/v2.047/svg
attack.svg: emoji_u2694.svg; hp.svg: emoji_u2764.svg;
defense.svg: emoji_u1f6e1.svg; size.svg: emoji_u1f4cf.svg;
cannons.svg: emoji_u1f4a3.svg; speed.svg: emoji_u1f4a8.svg;
cargoCapacity.svg: emoji_u1f4e6.svg; crew.svg: emoji_u1f465.svg.
Licensed under the Apache License, Version 2.0 (see above).

IBM Plex Mono Medium (500), Latin webfont
Used for wood, metal and rum quantities and hourly production in the game header.
Source: https://fonts.google.com/specimen/IBM+Plex+Mono
Font file: https://fonts.gstatic.com/s/ibmplexmono/v20/-F6qfjptAgt5VM-kVkqdyU8n3twJwlBFgg.woff2
Copyright 2017 IBM Corp. with Reserved Font Name "Plex".
Licensed under the SIL Open Font License, Version 1.1.
Full license: licenses/IBM-Plex-Mono-OFL.txt