Activision’s stock continued to surge on Tuesday on the news that the video game maker will merge with Vivendi.

By mid-day, the share price has gained $1.86 or 7.5 percent. The previous day, the shares gained 12.7 percent.

The $18.9 billion merger announced on Sunday would create a gaming conglomerate capable of competing with Electronic Arts, the giant of the industry. Titles controlled by the combined Activision-Vivendi would include World of Warcraft, Simpsons, Tony Hawk, Star Wars and Shrek

Vivendi Games, a division of French holding company Vivendi, is based in Los Angeles. Activision is headquartered in Santa Monica.