Cellius Inc.[a] was a Japanese video game developer and publisher headquartered in Shibuya, Tokyo, founded in 2007 as a joint venture between Sony and Bandai Namco Holdings.

The aim of the company was to assist in helping Sony compete with Microsoft and Nintendo.

[2] Sony hoped that the company would make up for the losses it made during quarter two of its financial year.

The company planned to use Sony's Cell microprocessor, the heart of the PlayStation 3, for PlayStation 3 games and games for mobile phones and personal computers.

This Japanese video game corporation or company article is a stub.