2011 was a big year for the video game industry. Activision Blizzard's (NAS: ATVI) Call of Duty franchise released "Modern Warfare 3," grossing a record-breaking $400 million on the first day.
Facebook games developer Zynga (NAS: ZNGA) debuted onto stock exchanges with a highly anticipated initial public offering, or IPO.
And Electronic Arts (NAS: EA) stock rose over 30% as it released "Star Wars: The Old Republic" and entered into social media with games like "The Sims Social."
Despite the lingering effects of the recession, the video game industry is seeing impressive demand. If you're interested in investing in video game stocks, here are some things to keep in mind when comparing companies: