It's real though, this is known as isostatic depression/rebound. The continents essentially float on an ocean of magma.

I'm surprised no one has recommended Game Maker yet. 8 years may be a bit too young though, but that applies to almost all languages.
https://en.wikipedia.org/wiki/Game_Maker
Unfortunately it's Windows-only (the editor at least) and only available in English. But when it comes to creating 'visual' programs (mostly games), this is about the easiest programming 'language' you will find that's still flexible enough. And there's an active Dutch community, which has translated the official documentation to Dutch as well. Game Maker uses a drag-and-drop mechanism like scratch (and there's a scripting language for more advanced users), so the learning time is minimal. There's a free ('lite') version that excludes the more advanced features, but these aren't needed anyway for beginners.

I highly recommend sticking to the 'classic' version (version 8.1) though, because it's somewhat easier to use, more stable, and has more community support. The 'studio' series is more focused on indie game development, is much more expensive, and the free version is crippled.