Today I have been hooked on a new FPS, it has amazing weapon customization and decent graphics. Not too resource demanding and a decent startup balance for new players.
Line of Sight is an online FPS game, developed by a small independent studio, that trying to bring many unique features and innovative systems, such as detailed character and weapon customization. Whether you like to play games casually for fun or competitively for E-Sports, you'll be in for equally fun - Steam Page
Definately worth a download. Come check it out!