There are a few easy languages out there that might prove to be an amazing stepping stone for mobile game app development
Blitz Basic/3d are languages made specifically to make games with. Its free to try and it just costs around $85 to buy. Games like Platypus and Tank Universal have been made using this language.
Dark Basic is another language created to make
games with, it costs $40 and with it you can easily make 2d and 3d games. Games like the Magic Land and Room War were made using this tool.
Flash is quite expensive but many people make games using its action script, some of the most popular games in the word have been made using this language.