Field effects are there, but I don´t call this fucking the game-mechanics, I call it pleasuring them. Shofu doesn´t even have to play it, he just wants to.
Just my ´lil rant here, but I see Reborn as a great game which sets the bar for new Pokémon fangames yet to come and it inspired me to start making my own game as well. Reborn´s plot has some mean cliffhangers, tho.