The developers listed on the titles are n’t Microsoft, Nintendo, or any other recognizable game developer. They almost certainly are n’t official copies of the games.

Every one we initially linked has been pulled down, but others still exist. Some copies of 2048, Flappy Bird, Fruit Ninja, Temple run and others remain.

Many listings, even from different developers, had very similar descriptions, suggesting that they could be coming from the same source. Many listing, including a number of duplicate games, were very similar.

There are screenshots of just a few of the games we found. Here are screenshots from the games they found.

A now-deleted Tweet appears to be from the @ msedgedev account, which we saw via resetera.

Jordan chase installed the Mario Kart 64 extension on Twitter. He said in a reply to the now-deleted Tweet from @ msedgedev.

Chase said the Mario Kart 64 extension downloads a ROM of the game. It’s unlikely that Nintendo would let people download copies of its most-loved games over free browser extensions.

The Mario Kart 64 extension downloads a ROM of the N64 game. The extension downloads the game’s ROMs.

The Tetris extension appears to be a clone of the famous puzzle game. It does n’t download a ROM, says chase chase.

Some of the games we found have reviews dating back to October. It’s unclear why they have been available for so long.

Many listings attempt to skirt trouble with dubious disclaimers acknowledging the listings are n’t affiliated with the original games. The listing for Mario Kart 64 is one of the most popular listings in the world.

All graphics, games, and other multimedia are copyrighted to their respective owners and authors. This game is not affiliated with nor endorsed by Nintendo.

Microsoft, Nintendo tell the verge they are looking into the situation. Microsoft and Nintendo say they’re’looking into’ the situation.

Some of the games have now been removed. Update update update was updated on February 13th, 1:39am et. Update: Update update: 1:39am et.