Artist Jacob Janerka, who is working on the 2D adventure game Paradigm, has also been working on something else: mock-ups of a 2D Seinfeld adventure game.
Via Attract Mode, this isn’t something you can play, or likely ever will (unlike Han Solo Adventures, which is still being made). Just something we can look at, and sigh, and think “boy this would work really well if he collaborated with the @SeinfeldToday guys.”