The mobile app and game developer, backed by CyberAgent and Start Today, is expected to go public in Japan on Christmas Day.

Kayac, a Japan-based developer of smartphone apps and video games, has been admitted to the Tokyo Stock Exchange Mothers Market and will float on December 25, according to Japanese news site Bridge.

Launched in 1998, Kayac’s corporate backers include fashion e-commerce company Start Today and CyberAgent, an online advertising agency. The two, together with venture capital firm Globis Capital Partners, hold a combined stake of about 10% in Kayac after collaborating on a $4m investment in 2011.

Kayac’s three…