2DCG Porn Games
Games that have 2D art in cutscenes. It might be drawn by hand or generated digitally in software like Koikatu!. It is not necessary for the gameplay to be 2D for the game to be considered as 2DCG. People often prefer 2DCG Adult games over 3DCG for the aesthetics and handcrafted scenes; 2D allows the creator more creative freedom while developing their porn games. But to create decent panels using 2DCG, it takes a lot more effort than 3DCG games generated by 3D modeling and posing software like Daz, Blender etc..
