“What is Super Mario Crossover?”, one could ask.
In summary: There is a website that features free online games, and some other zaniness, called ExplodingRabbit.com. Exactly three years ago today, they released a humble little game called Super Mario Bros Crossover (seriously, go try it at that link).
The appeal of the digital version of that original adventure is ludicrously brilliant and brilliantly ludicrous. The game is basically a browser version of the original 8-bit Super Mario Bros, but with the option of playing as other characters from classic NES franchises. You can battle as the guy from Contra, or complete it as Samus Aran from Metroid, or perhaps you want to see what the Mushroom Kingdom feels like as Mega Man.
It has become a great success, a worldwide phenomenon, and one of the most popular, well-known, utterly free browser games in history, with multiple versions being released at the site to cover subtle-but-enhancing upgrades and further celebrate the power of double-jumps and mash-up fun.
Now, fans can drool at the prospect of 3.0, since the trailer dropped on YouTube.