From the blog "Forest Hideout"

Hello everypony!   Finally the HUD has been reprogrammed!  ~And length of the HP bar increases along with maximum HP! For some reason I always like that little feature in games, because that makes increasing max HP more interesting --- especially checking if you can go off-screen with this.   I thought it all will take few hours, but it ended up taking two days, heh. Why it took so long? I had to replace most of the HUD graphics in game files and reprogram