Implementation Prerequisites - Learn OpenGL ES: For Mobile Game and Graphics Development - page 37

Figure 2-2 . Zeemote JS1 game controller
Casual, Tower-Defense, and Puzzle games are the most popular genres of games on
handhelds. In most of these games, the innovation and simplicity of the UI design
(layout and use of visual elements, as well as the use of sensors) makes them widely
accepted across all devices, by all groups of people, whether the game uses buttons
to make a character jump or touch to position a basket and collect fruit ( Figure 2-3 ).