Friv is my top recommendation. Upon visiting the site, you'll be greeted with a full-screen of tiny screen shots for more than 250 free online PC games! All kinds of popular games and they are of various genres. Friv operates on a system of 'one in one out'—whenever a new game is added, it replaces the least popular one in the existing selection, so you will have the most popular ones in hand from time to time, just in one place. All games are online, you do not need to install any game software onto your PC. All you need is a PC with high speed internet connection, pick a tiny screen shot and play a game. It's simple and intuitive. Netpotion Gamez is a good alternative game site with minimum advertisements. It features 36 tiny screen shots in each page from a library of more than 800 free online games. A click on each tiny screen shot brings you to the game selected. Top 10 hottest games and top 10 highest rated games are highlighted at Netpotion, which also categories the games into various genres such as action, adventure, board game, driving, fighting, puzzles, shooting, sports, etc. A search box is available for you to check if a particular game is included in the library. Some best games featured at Friv or Netpotion are also available to some other websites, such as Game Pear or GameTop, which have a choice of playing the games full-screen. Some of the good games that I have played at Friv and liked the most are listed here. The full-screen games that I have tried and consider as my favorite are listed here. You might want to zoom in and give it a try.