Hello,
basically, don't hold too much hope for having Pig, or any other copies of Farkle on the Playroom.
The Playroom has a different philosophy here: The idea is to offer a variety of games, with each game having something interesting or different about it.
The concept of Farkle or Pig is more or less the same, it's just a less advanced version. The idea remains, roll as long as you choose to stop, or until you are forced to stop.
In fact, it's simple enough that you can play it against your friend already on a free table (just by enabling dice rolls and manually keeping a track of the scores).
The same goes for Toss up, Zombie dice, or any other future game from the other platform which might be suggested next.
Personally that philosophy is one of the main things I like about the Playroom, at least when a new game comes, we can know it will be something interesting or unique, and not some press 2 keys and fall asleep game.
Of course, different folks have different tastes, so it's fine if you don't agree with that, just telling you in advance not to expect such games.