If you really want to get a little fun with a web game, a game good enough to you try run it in your smartphone or in your office if you aren’t busy enough, you could try one of this 5 games bellow:
Cut the Rope is a really fun game created in 2010 by ZeptoLab, a game dev studio from Russia. Now, the game have a nice web version, if you never played before in your smartphone you could try this one. You can read more about the process itself on the official blog.
HexGL is a Wipeout-like, futuristic racing game created using the Three.js framework on top of WebGL. So if you like “speed”, and want to try something “fast”, you should try this game. 😉
Now, if you are looking for a really nice shooter game. Earlier this year they presented
PlayCanvas, a browser-based, visual editor for WebGL games and apps. To prove that their project works, they created a Counter-Strike like, multiplayer third-person shooter, called D.E.M.O. They describe what is going on behind the scenes in this blog post, and they’ve presented the game at this year’s onGameStart conference.
BrowserQuest is a classic, massive multiplayer RPG game with beautiful pixel art graphics, It’s all about exploration. You can read nore about the project in this blog post.
Lost Decade Games, Onslaught is a fun defend-your-castle-style game that, with its cute, pixelated graphics, harks back to the 8-bit era of gaming. You need to fight off waves of enemies attacking your castle. You can play Onslaught here.