It's Gonna Really Break the Immersion Episode 10

Tsubame creates the red light green light mini game that Hajime thought up in PECO. However, Aoba sees the mini game and comments that something is lacking. However, Hajime sees the finished product and says something is lacking. Hajime isn’t able to figure out exactly what is lacking, and asks Aoba and Yun for help, but they still aren’t able to figure it out. Hajime asks Tsubame if she thought the mini game was fun when she was making it, and her answer makes Hajime realize what’s missing, but Tsubame then worries about how the extra work is going to reflect on her...