It gives you something to fight for, a motivation to keep going, and it adds an element of investment that can't be achieved by simple game mechanics alone. (mmobro.com)
Another type of game us old folks used to play were simple handheld games that used a monochrome LCD display and extremely simple game mechanics. (gamedevelopment.tutsplus.com)
It's very entertaining, once its intuitive controls and simple game mechanics give rise to a challenging and memorable gameplay. (indiewatch.net)