Sir Garrett and Princess Lynette are trapped in Dragon Tower. They need your help to escape. You have the key to set them free–you just have to know the magic letters!
Release date
2010
Source
http://static.nickjr.com/game/assets/knig_dragon_tower/
One Good Knight: Race Through Dragon Tower screenshots
I like this game it’s just that in level 3, they don’t include all the letter sounds in the game