NCSoft's last game reveal is Aion Tempest, a forthcoming mobile battleground that is set about 900 years ahead of the events in the PC MMO. According to ThisIsGame, it features "a large-scale battlefield". No information about when it might be released was announced. However, a short video and a few screenshots show off some pretty decent 3D graphics.
The game focuses on the ancient rivalry between Daevas and Balaurs. There will be small Legion battles that can turn into full-fledged wars, all created by the player community. The fights take place in real-time.