waifu2x VS arcomage-hd

You can export the large PDF as a JPG then resize it using Tools > Adjust Size. You could also use https://waifu2x.udp.jp to "up-size" the smaller file to give it a bit more resolution. You can set up an Automator script to resize multiple images.

Just use waifu2x to make it bigger

Crop it yourself with Gimp (free) or Photoshop (paid), then upscale it with something like Waifu2x.

You can use https://waifu2x.udp.jp/ AI to enhance 2k or 4k. I made a 2k wallpaper.

You can try screenshot it and go to waifu2x to make it bigger

waifu2x

I've increased the probabilites of attacking cards. It's now easier to attack and win by destroying opponent's tower. However, I think it actually becomes harder generally, because the computer AI always slightly prefers attacking over defending, but was probably bottlenecked by the low number of attacking cards, which I have just increased.

I use MIT license as well - for every image made by me, all code written by me, I released them under MIT. What I meant is that the images and text that are copied from 3DO's Arcomage are not owned and can't be licensed by us, and should be considered "fairly used" IMO. I mentioned the licensing thing also partly in response to what you said above "[...]UbiSoft did not buy the rights to Arcomage, this gives complete freedom to the community[...]", I don't see "complete freedom" is correct here. But yeah, chance authors of non-commercial opensource fan-remakes of abandonware get into legal issue is almost zero. Anyway, if I were you, maybe I'd not write a long, paranoid license file like Arcomage HD, but I'd at least state something like "The assets, text and other copyrightable elements of the original game are copyrighted by The 3DO Company" in the last section of the README. It's not only legal stuff but also courtesy or a tribute to 3DO and original authors I guess. It's up to you though.

It also has an Electron Desktop app in Windows but that's merely a Chromium browser-like wrapper that visits arcomage.github.io. Usually you don't need it. Use your browser to enjoy the PWA game that can be played offline.

Some update of ArcoMage HD: since the initial alpha release, I've added surrender feature for some rare situation, fixed several bugs including negative resources and new game that crashes the program. With the help of Google Translate, DeepL, original MMVIII's Arcomage images & OCR, I completed the Spanish & Italian translations despite zero knowledge of the languages. I also extracted localized tavern names and location names in all ten languages.