I found a site that lets you play PB2 in its original form, no changes or anything, in 2011!
Literally, you can play the game exactly how it was on March 15th, 2011. Even enabling the chat under the game screen!
Play here: https://web.archive.org/web/20110313080 ... om/?s=2&a=
I'll be making a YouTube video about this extremely soon, so ALL of us can enjoy PB2 in its prime and "glory" days. I still enjoy the game immensely today, but it's fun to go back for nostalgia.
Now, multiplayer can't be played, but you can still get the experience in the campaign.
Additionally, you can explore custom maps and players that were big during that time as well by going through the site.
On top of that, you can even scroll through certain time frames. Perhaps you want to play PB2 in 2012, 2013, 2014, or 2015. The site lets you do it.
Thoughts, everyone?

With respect, insight, and choice,
...those are my thoughts.