Open World games consist of games that have an open exploration aspect to them, allowing the player to go and do as they wish. Another name for this type of game is “sandbox”. Open World games became highly popular with the release of GTA III all the way back in 2001.
Most open world games found on Android are ports or copycat style games of those ports. This leads to the games usually having poor touch screen controls, while some are serviceable, a controller is recommended for more precise play. The few games in the open world genre on Android that are not ports tend to have a better design to their touch controls, but still this is not always necessarily the case.