11) Which video game company developed the Grand Theft Auto games?
12) Who developed the Halo games?
13) What company developed the "Assassin's Creed" series?
14) Who developed the game "Portal"?
15) What company developed the "Half Life" series?
16) Which company developed the "Tomb Raider" series?
17) What company developed the game Doom?
18) What company created the popular Mario franchise?
19) What company developed the Halo series?
20) What company created Grand Theft Auto?