List of highest selling mobile games (paid and free)

[Gilgamesh]

Paid downloads

• Tetris (100 million)
• Pac-Man (30 million in the US)
• Angry Birds (12 million)
• Block Breaker Deluxe (8 million)
• Sonic the Hedgehog (8 million in US and Europe)
• Fruit Ninja (6 million)
• Doodle Jump (5 million)
• Final Fantasy IV: The After Years (3 million)
• Flight Control (2 million)
• Pocket God (2 million)
• Brain Challenge (1.5 million)
• Flick Fishing (1.3 million)
• Bubble Bash (1 million)
• Coin Stack 2600 (1 million in Korea)
• Cut the Rope (1 million)
• Doom RPG (1 million)
• Guitar Hero III Mobile (1 million)
• Super Bomberman (1 million)

Freemium downloads

• Angry Birds series (1 billion)
  • Angry Birds Space (50 million)
• Smurfs' Village (56 million)
• Draw Something (50 million)
• Pool Pro Online 3 (25 million)
• Fruit Ninja (20 million)

(List incomplete)

But just want to give an idea of what mobile game sales are like, kind of reminds me of the old days, the highest selling games are tetris, pacman, and sonic. Now if they get Mario on a mobile game it'll complete it.

Source is wiki