Hi!

INFO:root:Downloading https://andreipasynkov.itch.io/upandown
Traceback (most recent call last):
  File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/tmp/itch-dl/itch_dl/__main__.py", line 3, in <module>
    run()
  File "/tmp/itch-dl/itch_dl/cli.py", line 68, in run
    return drive_downloads(jobs, download_to, args.mirror_web, args.api_key, keys, parallel=args.parallel)
  File "/tmp/itch-dl/itch_dl/downloader.py", line 350, in drive_downloads
    results = [downloader.download(job) for job in tqdm(jobs, **tqdm_args)]
  File "/tmp/itch-dl/itch_dl/downloader.py", line 350, in <listcomp>
    results = [downloader.download(job) for job in tqdm(jobs, **tqdm_args)]
  File "/tmp/itch-dl/itch_dl/downloader.py", line 240, in download
    metadata = self.extract_metadata(game_id, url, site)
  File "/tmp/itch-dl/itch_dl/downloader.py", line 149, in extract_metadata
    infobox = parse_infobox(infobox_div)
  File "/tmp/itch-dl/itch_dl/infobox.py", line 116, in parse_infobox
    parsed_block = parse_tr(name, content_td)
  File "/tmp/itch-dl/itch_dl/infobox.py", line 100, in parse_tr
    raise NotImplementedError(f"Unknown infobox block name '{name}' - please file a new itch-dl issue.")
NotImplementedError: Unknown infobox block name 'Category' - please file a new itch-dl issue.

...so I did! Got this from https://itch.io/jam/game-boy-showdown.

This avoids any encoding errors caused by JSON files containing non-ASCII characters (e.g. emojis).

I'm not sure if this encoding issue occurs just on Windows (the corresponding stack trace stems from CP-1252), but I think opening the file in binary mode is the right way to go anyway.

For reference, here's the traceback logged when trying to load a file which has some emojis in the JSON:

Traceback (most recent call last):
  File "itch-dl\venv\Scripts\itch-dl", line 5, in <module>
    run()
  File "itch-dl\itch_dl\cli.py", line 60, in run
    jobs = get_jobs_for_url_or_path(args.url_or_path, settings)
  File "itch-dl\itch_dl\handlers.py", line 191, in get_jobs_for_url_or_path
    return get_jobs_for_path(path_or_url)
  File "itch-dl\itch_dl\handlers.py", line 154, in get_jobs_for_path
    json_data = json.load(f)
  File "C:\Python310\lib\json\__init__.py", line 293, in load
    return loads(fp.read(),
  File "C:\Python310\lib\encodings\cp1252.py", line 23, in decode
    return codecs.charmap_decode(input,self.errors,decoding_table)[0]
UnicodeDecodeError: 'charmap' codec can't decode byte 0x8f in position 22612: character maps to <undefined>

It's possible to query the API for any available Download Keys directly for a Game ID, instead of downloading them all before the fact. This would be faster for a small amount of titles to download, especially if the user has a ton of purchased/claimed games.