Welcome to Nemeton Singularity Simulations, home of CAOS, the Combined Arms Operations Series, a turn based, top down simulation, designed to accurately reflect operational level World War II era land warfare. CAOS offers both historical and hypothetical scenarios ranging from 1936 to 1945.

If you could go back in time would history change? Could the Allied invasion of Sicily or the Battle of Gazala turn out differently?  What might happen if the United States entered World War II in 1939 or if France and Great Britain refused to sign the Munich Agreement and fought Germany in 1938? What would happen if Soviet and German armored forces clashed in 1936? Find the answers in CAOS. 

CAOS players command the forces of major powers, including the United States, Great Britain, France, Russia, Germany and Italy. Scenario options ranging from single division engagements to battles involving entire army groups. CAOS is a brigade / regimental level simulation with detachable battalions and companies. All formations and equipment represented, have been evaluated formulaically to promote historically accuracy. Currently, CAOS may be played by one to four players depending on the scenario chosen. CAOS players may even play against themselves by commanding both sides of the battle.  

CAOS is currently in closed beta testing and applications for inclusion in the beta may be submitted by creating an account and submitting a CAOS beta test application from the main menu above. Check this page often for development news and announcements or join the forum and get involved in CAOS.


CAOS Released

CAOS version has been released.


This version introduces a new feature to the Zone of Control (ZOC) overlay. While the ZOC overlay is active, hovering the cursor over a hex adjacent to an enemy unit will display all of the enemy occupied hexes that could be involved if a deliberate attack were launched from this position.


Further this version fixes the missing scenario preview for the Tobruk Eastern Offensive. Introduces a slight balancing adjustment for Philda Strike and Counter Strike, moving the REDFOR reinforcements from the BLUFOR counter attack turn (10) to turn 12 and resolves some remaining errors with the Soviet orders of battle


see the patch notes thread for details.

CAOS Released

Version has been released, this version introduces engineering options, (bridging and fortification) to the majority of scenarios.

In addition the forward minefields on the Tobruk Offensive have been removed, in order to facilitate more mobile and less predictable game play and a new Tobruk Eastern Offensive, played east to west has been introduced.


See the patch notes thread for details.

CAOS Released

Version has been released. This build introduces a new scenario, Philda Strike and Counter Strike and corrects various previously reported issues with the Soviet and Allied orders of battle.

Philda Strike and Counter Strike is a 20 turn scenario beginning on the western side of the Philda Sector map and consisting of an initial REDFOR offensive against a weak defending position, followed by a BLUFOR counter attack. The scenario objective is territorial control, and the side in possession of the most victory positions at the end of the game wins.

See the patch notes thread for details.

CAOS Released has been released. This build is focused on fixes for issues identified by testers in the last two weeks. Including fixes for random scenario generation and some minor UI tweaks. In addition this build removes the fanatic bonus from Soviet Guards in the Hold and Defend posture.

See the patch notes thread for details.

CAOS Released has been released. This build introduces a new scaling mechanic to the requisition system. Replacing the fixed point requisition in Sand Table scenarios with a brigade equivalent system. Ensuring that players will receive the equivalent of a specified number of brigades in requisition points, scaled for the selected nation and year. In addition, air unit costs have been full reevaluated and generally lowered.

See the patch notes thread for details.

CAOS Closed Beta Test

CAOS has officially entered closed beta and is now accepting applications for beta test players. If you are interested in joining the beta please register an account and fill out an application. A limited number of applicants will be selected initially. As testing needs expand additional applicants will be selected.

Tutorial Videos

In preparation for the next round of beta testing a new set of tutorial videos is now available on the NS2 Youtube channel. Covering creating new games, joining games, the game interface, movement, combat, air command and special units.


CAOS Released This build introduces new hot keys for forming battle groups and detaching units, improves the auto reconnect functions and changes the effectiveness of artillery barrage.

See the patch notes thread for details.

CAOS Released has been released. This build introduces an exciting new random scenario game mode for testing as well as some scenario rebalancing and fixes.

See the patch notes thread for details.


A wiki for CAOS covering the basic game concepts and mechanics is now available. Take a look at the quick guide for new players or browse the wiki for more information about creating and joining games, movement, artillery missions, combat, logistics and a range of other topics.