I think most Atari 2600 games fell into this trap, not just because they tended to have some of the most awesome covers and lacking tech, but some were just awful ports or phoned in licensed games.

I don’t have many specifically coming to mind, but the Raiders of the Lost Ark game had a really cool cover (still does, but also used to), but the game was an impenetrable mess, both visually and from a game play standpoint. It was quite complex though, so maybe there was something interesting beneath the depths that kid me could never figure out.