"The artist has not indicated any out of the box engine support, however with modifications most products will work in any engine."
I can see where the confusion is coming from, considering the uploader did not indicate that this is an
AGK (app game kit) related pack. 2D sprites work different in Game Guru, as you'd have to program all movement in LUA and particles are not supported. Were you intending to use this pack with AGK or GG?