Play Pong in your browser - Time Waster
Pong is such a classic game, what could possibly be done to make it feel fresh and creative? How about using browser windows as game elements? This version of Pong by Stewdio launches three pop-up windows when you press the P (for play) button -- two paddles and a "ball".
You can play against the computer using the arrow keys to move your paddle up and down, or you can choose to play against another human who can use the A and Z keys to move their paddle up and down.
Given the unorthodox way the game was implemented, the gameplay is quite faithful, and the graphics refresh fast enough for it to feel snappy. Rather than the typical smooth movement of the paddles you might expect, this version of Pong uses 5 positions from top to bottom on the screen, and each tap of a direction key moves one space in the chosen direction. This allows you to move very quickly when necessary using multiple taps.
While Stewdio's Pong was obviously done as a sort of proof of concept, it's a completely playable version of the game. For some reason the game doesn't seem to keep score, but that's really the only thing that is missing.