Tatsunoko vs. Capcom Ultimate All-Shooters mini-game
To unlock the Tatsunoko vs. Capcom Ultimate All-Shooters mini-game, defeat the final Boss, then press any button during the credits and it will become playable. The music will change and Doronjo and her allies on a bike will appear. Collect all of the yellow letters to spell "THANK YOU FOR PLAYING". Then, complete the playable bike sequence.