Here is some additional information on the OFL (Open Font License):
https://openfontlicense.org/ofl-faq/
As it would apply to AppGameKit Apps, here are 2 points (1.3 and 1.4) of particular significance from the OFL FAQ document located at the above URL:
Quote: "1.3 I want to distribute the fonts with my program, does this mean my program also has to be Free/Libre and Open Source Software?
No. Only the portions based on the Font Software are required to be released under the OFL. The intent of the license is to allow aggregation or bundling with software under restricted licensing as well.
1.4 Can I sell a software package that includes these fonts?
Yes, you can do this with both the Original Version and a Modified Version of the fonts. Examples of bundling made possible by the OFL would include: text editors, word processors, design and publishing applications, training and educational software, games and entertainment software, mobile device applications, etc."
Edit: I should also add points 1.10 and 1.11 of the OFL FAQ as particularly relevant to the development of AppGameKit Apps:
Quote: "1.10 Does the full OFL license text always need to accompany the font?
The only situation in which an OFL font can be distributed without the text of the OFL (either in a separate file or in font metadata), is when a font is embedded in a document or bundled within a program. In the case of metadata included within a font, it is legally sufficient to include only a link to the text of the OFL on https://openfontlicense.org, but we strongly recommend against this. Most modern font formats include metadata fields that will accept the full OFL text, and full inclusion increases the likelihood that users will understand and properly apply the license.
1.11 What do you mean by ‘embedding’? How does that differ from other means of distribution?
By ‘embedding’ we mean inclusion of the font in a document or file in a way that makes extraction (and redistribution) difficult or clearly discouraged. In many cases the names of embedded fonts might also not be obvious to those reading the document, the font data format might be altered, and only a subset of the font - only the glyphs required for the text - might be included. Any other means of delivering a font to another person is considered ‘distribution’, and needs to be accompanied by any copyright notices and licensing information available in OFL.txt."
