The Electric Company on PBSkids is hosting a game called Halfpipe Hoverball (developed by sesameworkshop) to teach kids how to identify that words can have letters, or letter combinations in common. This can help students pronounce unfamiliar words as they learn to recognize similarities between new words and words that are already known.
Disclaimer: This can be challenging for students with dyslexia, as it may be more difficult for them to retain words in their memory.