They aren't intended to be more or less difficult, just different ways to play the game. Some of them are a bit better than others, but the difficulty is not in any particular order.
I hate this game because .... when i was updating ... an idiot's face appeared ... and scare me ..... like "WTF ???....( 3 sec later) holyyy! "is not funny.... 5/5....could have been 6 / 5 or more...if I had not scared -.-
 "Poker Quest RPG"){kind=icon}
 "Defender's Quest (lengthy!) Demo"){kind=icon}
 "Mud and Blood 2"){kind=icon}
 "Epic Battle Fantasy 3"){kind=icon}
 "You are a..."){kind=icon}
 "Hack Slash Crawl"){kind=icon}
 "Upgrade Complete 2"){kind=icon}
They aren't intended to be more or less difficult, just different ways to play the game. Some of them are a bit better than others, but the difficulty is not in any particular order.