Is there a free game creation software that has a "trigger & scenario" style.
{*player* kills *creature* @ lvl(***), gains (****)Exp to *Used skill(s)*.}
Game play:
Player killed Level 1 Zombie for 15Exp to Attack Skill.

That being said, i need a software that lets me set parameters, rules, triggers, conditions, and whatnots. I need software that will let me design a whole game "easily".
Preferably 3D similar to old school runescape but will settle for a better 2d and must be free.