Have a look at some of the games I've made. Most of these are fairly small web-only projects which use HTML5 canvas directly, along with a few using the Phaser game framework.
Runny Block
Dodge obstacles for as long as possible while collecting game-changing power ups. A colourful one-button runner game.
Tessellate
Tessellate - a tetris clone written in Javascript. My April entry for One Game a Month.
Pew Pew
An HTML5 shoot-em-up game - my January entry for One Game a Month. A writeup of the PewPew project is on the blog.