What is Actionscript? Edit
Actionscript is the scripting used in Adobe Flash. Due to Actionscript's implementation with Flash, it is extremely simple to create a full game in Flash in a relatively short amount of time. This is because Flash allows you to directly interact and draw graphics and animation, and thus allows you to skip over a lot of preliminary code you have to write in other languages.
Actionscript can be used in conjuction with Flash to make games that can be sponsored (by sites like Armorgames, Play Free Online Games or Crazy Monkey Games if you submit them to such sites as Newgrounds based on their performance.