"Take command over RAF during the WW2 history turning point, the Battle of Britain. The goal of the game is to defend Great Britain against German bombing raids."

This game uses Adobe AIR.
This is a DRM-free version, hence no crack needed.

If you like the game, support the developer, buy it. 
https://www.humblebundle.com/store/p/thefew_storefront 
http://store.steampowered.com/app/300320 
http://isthereanydeal.com/#/search:the%20few;/scroll:%23gamelist
As of now (23.08.2014), it costs $2 (-75%) on Shiny Loot. 
http://www.shinyloot.com/the-few