He created the website Newgrounds and co-founded the video game company The Behemoth.

[1][2][3] Fulp has been credited with "changing the landscape of the Internet forever" by kickstarting the browser game scene in the late 1990s, both with the releases of his own advanced Flash games and the launch of the Newgrounds Portal, one of the first sites that allowed creators to easily share their creations with a large online audience.

In 1991, Fulp launched a Neo Geo fanzine called New Ground and sent issues to approximately 100 members of a club originating on the online service Prodigy.

[8] Using a hosting service, he launched a website called New Ground Remix in 1995, which increased in popularity during the summer of 1996 after Fulp created the BBS games Club a Seal and Assassin, after graduating from Pennridge High School.

[13][14] Fulp received the Pioneer award at the 2021 Game Developers Choice Awards for the creation of Newgrounds and for being a trailblazer of the Macromedia Flash games that helped define a generation of indie developers.