Game control actions involving mouse, keyboard, joystick, and other devices, should be smooth and the action should be optimized as it increase the usability of game [1].
Game control is an integral part of game play. Having effective, smooth and minimized movements of various devices increases the usability of game.
Rough and faulty game controls can have negative impact on usability factor.
Provide game with minimum mouse scrolls, keyboard button, and other devices. Optimized game actions along with smooth game controls increases hassle free game play.
In the case of point and click game, there should not be any action related to keyboard or any other device, as it causes unnecessary control movements for player.
[1] Korhonen and E. M. Koivisto. Playability heuristics for mobile games. In Proceedings of the 8th conference on Human-computer interaction with mobile devices and services, pages 9–16, 2006.