Board Thread:Questions and Answers/@comment-26921940-20170916075204

Actually, there are 3 rare references titled "PlayStation", "20th Century Fox" and "Xbox" in two episodes showing Mordecai's Mom.

The Xbox One Backwards Compatibility reference is rare, also when you're playing the Xbox 360 games on the Xbox One on this show.

The PS4 Backwards Compatibility reference is also rare, but consists of playing the PS3 games on the PS4 on this show.

20th Century Fox reference is extremely rare, but can only be seen once per episode. 