The Second God Wars

"If we wish to end this war, we must kill Bilrach, the bastard who constructed these dreadful dungeons. His forces operate strictly under him, and without a commander with his knowledge of Daemonheim, our final shot a prosperity throughout Gielinor will be hurdling towards the enemies at a deadly speed"

-Lord Zilyana, 

Cause
In the fifth age, year 169 (current year), there has been a major conflict between a group of Saradominists and Zamorakians over the control of the Daemonheim dungeons and chaotic weapons. It began as an expedition to find gravite and chaotic ore by several Saradominists, but then they noticed that Zamorakians had occupied the dungeons, which were once in Saradomin's control. A fight broke out near the surface between a group of ten led by Lord Zilyana and hundreds of minions of Zamorak, including battle mages, warriors, rangers, brutes (large henchmen), and even some trained creatures that aren't of this world. After Zilyana called for reinforcements, his forces advanced and strucked the sixth floor by dawn of the next day.

Saradominist Alliance
Although it has not yet been confirmed, Armadyl's representatives have spoken of joining Saradomin under the winged god's behalf. Also, despite Guthix's philosophies of peace, several dwarves and gnomes claim to have formed a militia that will target the army of Zaros.
 * Saradomin Alliance (led by the Zilyanas) - Asgarnian military, Mistalin military, Camelot military, Fremennik military, Dwarven and gnome militia, and the Tirannwn military (possibly others)

Zamorakian Alliance
Zamorak seems to have the strongest side, since all of their allies have made a bold confirmation. Zamorak and Zaros' supporters made a strong diplomatic decision to reunite. Bandos also chose the Zamorak side since his alliance with Saradomin is quite weak.
 * Zamorakian Alliance (led by Bilrach) - Troll Country, The Bandosian Empire (all goblins, ogres, orks, etc.), The Black Knights, Khazard's Army, The Mahjarrat, The Meiyerditch army, and Ardougne is suspected to secretly be providing Zaros with weapons.

Discoveries
Several armies on both sides have found unusual writings on walls and paper with Daemonheim. The most astonishing was a flawlessly drawn diagram of the god symbols on each side of the war as seen on the right. It is likely from the fourth age, a time where highly religious Saradominists used a different language for prayer purposes. Most assume that it was written by Saradominists that planned to stop Bilrach, the Zamorakian Mahjarrat, from releasing Zamorak from his fortress, which lies below the bottom of the dungeon system.