Simple and fun.
Its weird because the programming language it runs on is called ruby. It's a little bit of a pain because if you wanna try to start on this and move to real games like making fable or something it would be better to use C++. But anyway you can control the game you create with the stuff that the give to you or you can surf the web to find other things to use while making your game. The good news is that the limit bar is at a decent level. You can't go to a true 3d but could with the right skills make a 2.5d game. It's nice and fast to make a game.
So if you're looking to make a game and not spend to much time but have it coming off looking like an super nintendo game then this is for you. It is also flexible and easy to transfer to all your friends.