Bittersweet Birthday — is a beautifully animated adventure action in pixel graphics, where every battle is a fierce battle with the boss. You wake up in a strange object, not remembering who you are and how you got there. However, there is a friendly voice that speaks to you internally that gives you advice and asks you to come and save him. However, you are not alone, there are unbalanced people who are trying to track you down, and each of them will arrange a hellish battle for you.