I honestly dont see the huge deal with the option for purchased content..its not difficult to play without the premium powerups. If it was insanely difficult without the upgrades that would be another story however..but the option i dont see as such a big deal, developers need to make money too.
 "Elona Shooter"){kind=icon}
 "Bloons Tower Defense 4"){kind=icon}
 "Line Game"){kind=icon}
 "Amorphous+"){kind=icon}
 "Bullet Chaos"){kind=icon}
 "The Company of Myself"){kind=icon}
 "Feudalism II"){kind=icon}