worst game ever?

"ET the Extra-Terrestrial"
Wiki | Video review.

From Wikipedia:

Instead of making ET into a Pac-Man-type game, Warshaw tried a more original idea. He had favored a design that was more story-based in hopes of creating a game that would capture some of the sentimentality he saw in the original film, but eventually ended up scrapping some of his own ideas due to time limitations. Ultimately, Warshaw designed a game based on what he believed could be reasonably programmed in the amount of time he had available to him. The basic design was worked out in two days, at the conclusion of which Warshaw presented the idea to Kassar before proceeding to spend the balance of the allotted five weeks writing, debugging, and documenting about 6.5KB of original code.

ET is also notable for being the first video game to "credit" a graphics artist, with the initials of ET's artist, Jerome Domurat, being hidden as an Easter egg."

versus:

"Big Rigs"
Wiki | Video review.

From Wikipedia:

The box of Big Rigs states that the player may "race trucks across the country, with cops chasing them." GameSpot considered this description of the game to be nothing more than "horrible, horrible lies", since there are no police in the game. Additionally, they pointed out, the computer-controlled opponent vehicles have no AI and never move from the starting position, making even the description of the gameplay as a "race" questionable.

(Or perhaps it's this late-comer that steals the gong?)