Software development and product development in the field of mobile applications; Software development and product development in the field of video games; Software development and product development in the field of bitcoins; Software design and development; Computer software development; Computer software development in the field of mobile applications; Design and development of computer game software and virtual reality software; Design and development of computer software; Design, development and implementation of software; Designing and developing computer game software and video game software for use with computers, video game program systems and computer networks; Research and development of computer software