Realm of the Titans (Chinese: 天翼決; pinyin: tiān yì jué) is a multiplayer online battle arena video game developed by Ningbo Shengguang Tianyi for Microsoft Windows.

[2] Realm of the Titans uses the BigWorld engine, which was originally designed for Massively Multiplayer Online Role Playing Games presenting some issues of adapting both the client and the server to handle the very different requirements.

Development was started in 2008 soon after CEO Qian Wenhai and Lead Designer Zhou Weifeng returned to China after studying in Melbourne, Australia.

At University, both had become quite prominent in the Australian DOTA player base and had both previously qualified for the Asia-Pacific championship in Singapore.

This proved to be correct as multiple games of this type were released while RotT was being developed such as League of Legends and Heroes of Newerth.