There is no dedicated board for tabletop games, and I think it would be a great way to attract more people to the site.
The header text doesn't explicitly encourage discussion of them, but they were never disallowed.
The board rules are mostly suggestions at this point and the only things that gets deleted on any board are spam and blatantly illegal content. I mean there are threads about niggers on /politics/ and various *chans being offline on /debate/.
Its not like moderators would delete it anyways even if it was rulebreaking.