Students at the Oakland Military Institute took several courses offered by San Jose State and the online course provider Udacity this year. The university is now scaling back its relationship with Udacity. Laura A. Oda/MCT/Landov hide caption

itoggle caption Laura A. Oda/MCT/Landov

The game Don't Starve casts you in the role of "gentleman scientist" Wilson, with just one goal: Survive. Its unique mix of survival horror and crafting gameplay, paired with a charming Tim Burton-esque art style, made this a standout game of 2013. Klei Entertainment hide caption

itoggle caption Klei Entertainment

Twitter made its debut on the New York Stock Exchange in November. Both the social media giant and the relative newcomer Snapchat are valued in the billions, but neither company has yet turned a profit. Emmanuel Dunand/AFP/Getty Images hide caption

itoggle caption Emmanuel Dunand/AFP/Getty Images

A screengrab of a YouTube video of the game Walking Dead from the Swedish gamer known as PewDiePie. Videos of people offering commentary while playing video games are wildly popular on YouTube. YouTube/PewDiePie hide caption

itoggle caption YouTube/PewDiePie

Several Silicon Valley entrepreneurs are developing services that manage consumers' investment portfolios with algorithms rather than people. iStockphoto hide caption

itoggle caption iStockphoto

Which Internet hoaxes got you this year? iStockphoto hide caption

itoggle caption iStockphoto

Workers in Oakland, Calif., check the damage to Interstate 880 on Oct. 19, 1989; this portion of the freeway had collapsed during the Loma Prieta earthquake two days earlier. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP