Unfortunately, you cannot directly purchase stock in this American developer of popular PC games directly, because Blizzard Entertainment is a division of Vivendi SA.
In additional to owning Blizzard, Vivendi SA is a French media conglomerate that own many notable media outlets such as Universal Music Group and a 20% stake in NBC Universal.
Investing in Viviendi SA is possible in several ways it is traded on Euronext Paris stock exchange under the ticker symbol VIV and it is traded via the Pink Sheets in the US under the ticker symbol VIVDY or VIVDY.PK
This is partially true in that Vivendi does own the 52% majority of what was Blizzard. This was during the merger between Activision and Blizzard Entertainment forming what we now know as Activision Blizzard and 48% of the holdings stayed with the company in Santa Monica. They are ATVI on NASDAQ.
Neversoft was acquired in 1999 by Activision. Activision has since merged with Blizzard Entertainment forming Activision Blizzard which does trade on the NASDAQ under the ticker symbol ATVI.
The ticker symbol for Activision Blizzard is ATVI and it trades on the NASDAQ.
The ticker symbol for CEC Entertainment is CEC and it is traded on the New York Stock Exchange.
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For World Wrestling Entertainment, Inc. the stock symbol is WWE.
BET (Black Entertainment Television) is a subsidiary of Viacom Inc. The ticker symbol for Viacom is VIA and it is traded on the New York Stock Exchange.
Chuck E. Cheese's is operated by CEC Entertainment, Inc. The ticker symbol for CEC Entertainment is CEC and it is traded on the New York Stock Exchange.
HET is the old ticker symbol for Harrah's Entertainment (Casinos). The company is no longer a publically traded company. It was bought out and taken private.
The ticker symbol for DC Comics is not available since it is owned by Warner Bros. Entertainment, which is a subsidiary of AT&T. Warner Bros. Entertainment does not trade separately on the stock market.
The stock symbol for 4 Kids Enterainment is KDE and it trades on the NYSE.
Sea World does not have a ticker symbol. Sea World is a subsidiary of the Busch Entertainment Corporation. Their parent company (Anheuser Busch) was recently bought out by Inbev.
Blizzard Entertainment was created in 1991.