As of about two weeks ago, Filled With Online for FoundryVTT has been made public. You can grab it from Foundry's systems list, or view the system and its version history here.

Unfortunately, now I have no more reasons to put off my work on translating and mapping the Main Adventure content. I'll get to those when I feel sufficiently inspired to tackle the challenges they present.

In addition, I'm working on two additional sourcebooks.

Filled With Online: Alice in Virtual Land

Alice in Virtual Land is the first of the official sourcebooks to be fully translated (at this moment, it only needs maps and editing). It's an expansion including new Basic Classes, the Wonder Alice Racial Class, equipment, casino-based minigames, "Desert" terrain events in the Labyrinth of Phantasma, and even a racing adventure.

• The Fortress, a class which boasts the offensive power of the Warrior, the defensive power of the Guardian, and its unique skill that allows you to avoid being reduced to 0 HP once per turn.
• The Torturer, who uses various tools to weaken foes and pays their FP costs with stacks of "Dark Magic".
• The Fencer, who uses magic and rapiers in concert, and also has the unique ability to share a skill with an ally, or learn a skill from them.
• The Wonder Alice, a rabbit which uses time-based magic, and attacks with cards and chess pieces.

Filled With Online: Usonian Apocrypha

Usonian Apocrypha is an English-original sourcebook by yours truly. It'll be available on a Pay-What-You-Want basis. Currently, my plans include...

• The Freeman, a Basic Class for "classless" characters with no particular specialization and pitiful abilities, rumored to have something like a "guardian angel".
• The Honey Sucker, a Racial Class consisting of bears who are social drinkers specializing in pugilism, with a taste for mead.
• The Flokkr, a Racial Class consisting of squirrels, mice, and rats, who trade goods, fire guns with custom ammunition, and use squad tactics empowered by telepathy.

Hopefully there'll be more to include in Usonian Apocrypha later down the line, but these are the three items that're fully complete and ready to go.

These additional materials will get their own itch.io page. Love Marsh's stuff but hate mine? No problem. (Say "sike" though.)