For me it's also the SWD games. I played the very first paid ones way waaay back then. The ninja one, and My sweet prince, actor to be before the company moved to the new system with split free/paid apps. I accepted that anyway and patiently endured their ticket system. I played a bit everyday during school break because despise the horrible system, I still liked the characters. It's very sad that the series had to come to an end like that.
Actually what upsets me isn't that the games shut down, but the fact that NTT Solmare does...nothing for the SWD fans! Like their entire portfolio only has Obey Me! They're already making their 3rd obey me game, talk about milking that thing.
Smaller companies I would understand, but Solmare is not! They clearly have the resources to save and archive the old SWD games. But they chose to brush off their old fans who have supported them since the very beginning. It's understandable companies need to move forward, but they're shooting themselves in the foot by blatantly disregarding their old customers.