Sorry to crush your hopes, but it’s impossible to make HF playable over the internet.
It might be possible to play turn-based games like TicTacToe over the internet, but in case of existing realtime games this isn’t possible.
Depending on how the communication is implemented in a game, you will either get an unplayable slow framerate or the game won’t work at all.
Realtime games will work over the internet only if they are designed to handle the network latency.

Here’s a workaround:
English: http://www.planetvb.com/modules/newbb/viewtopic.php?topic_id=6862&lang=english
German: http://www.planetvb.com/modules/newbb/viewtopic.php?topic_id=6862&lang=german

thunderstruck wrote:
I’m wondering if other games have more unused code as well. Faceball might have multiplayer code hidden somewhere after all.

I spent several hours checking other games (including Faceball), but unfortunately I didn’t find any traces of unused multiplayer code.

thunderstruck wrote:
I played it with my wife for a bit. I noticed some balls getting lost right when they were over the net though. But maybe that was just my link cable or something.

Are you sure that the ball disappeard for no reason?
If there is a (serve) fault and the opponent returns the ball despite the fault, then the ball usually disappears somewhere around the net. Take a look at a serve fault here: https://youtu.be/mXbPchEiptM?t=56

There is already a thread about those replacement parts:
http://www.planetvb.com/modules/newbb/viewtopic.php?topic_id=6520

Thanks.
I uploaded a video for those that can not test it:

thunderstruck wrote:
Definitely a dog.

You are right, it’s definitely a dog, my dog 🙂
I asked Mr. Anon to add him as an easter egg for ROM hackers.
I know that disassembling and analysing a ROM can be time consuming and quite disappointing if there are no secrets to be found.

@thunderstruck
Congratulations for being the first one who found Lucky! I think you deserve a prize. Send me a PM with your email address and I will send you something cool.

thunderstruck wrote:
Btw. I remember that there were more debug menus which I activated through the emulator. I could for example >choose the stage or select the speed on the figther selection screen. I didn’t make and screenshots though.
I never figured out if there is a button combination to activate those.

That was probably just the selection screen from the VS mode.

BTW, regarding ROM hacking, I uncovered myself a rather big secret in a commercial VB game. By writing a bit of additional code, I was able to get the hidden content working. Considering that the game makes now much more fun, it’s quite strange that this part of the game has been disabled for the final version. I will release a patch in a few days. Till then enjoy the thrill of anticipation 😉

Here is a long overdue update:
– several bug fixes / better compatibility
– better sound
– backup SRAM save support

Attachments:

1. gbemu_160703.zip

Benjamin Stevens wrote:
Versions 1.0, 1.1, and 1.1a work on hardware, while versions 1.2 and 1.3 do not.

I have just tested version 1.3 on hardware and it works. You have probably used a wrong padding mode. If you are using Pad_VB.exe, then you have to use padding mode 3 to fill the ROM with duplicates.

Take a look at this:
http://www.planetvb.com/modules/newbb/viewtopic.php?post_id=17121

Here’s an updated injector. I added automatic padding and renamed the empty emu to gbemu.bin.

Attachments:

1. gbemu_140309b.zip

http://www.ifixit.com/Teardown/Nintendo+Virtual+Boy+Teardown/3540
That’s another nice guide, but BEWARE OF STEP 14!!!
Don’t touch those screws or you will end up with misaligned displays!

DogP schrieb:
Where can you find the database?

http://datomatic.no-intro.org/?page=download

I dumped Virtual Bowling myself and can confirm that the md5/sha1 values in your database are correct.

After fixing my glitchy displays, I finally fixed that annoying flickering.
I also improved the emulation speed for a few games.

Attachments:

1. gbemu_140309.zip

speedyink wrote:
…It’s hard to see in Mario land in this video since they happen so quickly, but you can sometimes see the garbled game bits that blink in and out. It’s much easier to see in the zelda portion, where character sprites get kinda messed. Does it do that for you on hardware?

Yes, that’s something I have to fix. But at the moment it’s a bit difficult to test it on real hardware, because my displays are extremely glitchy.

Here’s a new version with fixed 3D feature.
BTW the 3D effect works best with vertical shooters:

Attachments:

1. 

   solarstriker.gif
   

1. gbemu_140306b.zip

Here’s a version with swapped buttons and a video of the emulator.

Attachments:

1. gbemu_140306.zip

Here’s a patch that unlocks a debug menu:
http://www.planetvb.com/modules/games/?r009d

Thanks for the comments.
I plan to improve it further. Here’s a new version that fixes many graphical glitches like scrolling status bars. And Mega Man 1+2 are playable now.

Attachments:

1. gbemu-1.zip

a few screen shots:

Attachments:

1. 

   gbemu.gif
   

I will probably take part in the competition with a small project.

For those who haven’t found it yet, here is a hint:

Till February I won’t give any more information about it.