It's fair to say there are an absolute tonne of 'learn to code' games around right now. The movement was kicked off by the Hour of Code project and has carried on since then, with yearly updates to popular franchises, like Minecraft, that we've covered here before.
Golden Quest by Coding Park is similar, in that it aims to teach the principles of coding via a game-like interface, but it's also really great fun. You control Cody, a small pirate-like robot who lands as desert islands, and via your coding, moves around, jumps and digs for treasure.
Code is entered into the code editor on the left and the results play out in the game on the right. The early levels are predictably easy, but very soon they start introducing bugs for you to fix and baddies to fight, which must be dispatched within the time limit given. New bits of code are added too, like repeat blocks, which mixed with teleporters are a lot of fun :)
The animations are cute, the sound effects suitably jolly and the levels get really interesting. Even if you know how to code it's just fun trying to work your way through the levels, especially when they take all the code away from you and you're left to figure it out on your own. There's even a built-in level editor, which is superb fun to play with! All in all, a great package.