Yoyogames put out a free upgrade to the Standard version of their game creation program. It will probably be up until the end of the month. The Standard version does not limit resources unlike the free one. I've no experience with it but successful games have been made from it (Gunpoint, Hotline Miami).
http://www.pcgamer.com/2013/11/26/g...ition-now-free-for-budding-game-creationists/
http://www.pcgamer.com/2013/11/26/g...ition-now-free-for-budding-game-creationists/