First, I should explain why I felt a need to make a title like that... though it is really quite simple.  Out of Lump of Sugar's last five VNs, three were complete kusoge.   Only one of them was something worth remembering (Sekai to Sekai no Mannaka de) and the others were just downright rotten, due to their use of really stupid gimmicky progression systems (flowcharts with tons of scene-locks and going back and forth, Magical Charming's half-assed 'gameplay' etc etc) that ruined the games even