SIGNAL (Strategic Interaction Game between Nuclear Armed Lands) is a turn-based, three-player online game designed to study nuclear conflict escalation and the strategic stability of nations in an artificial world. Players compete to expand their nation’s world influence through potential military, diplomatic, or economic actions within the world.  Players must choose to negotiate peace or commit their actions and risk the outbreak of nuclear war.

★★★ Access Game ★★★

The Next Open Play Windows will be hosted on:
EVENT–RUSI/UKPONI: Wednesday, June 12: 6.30am-9am PDT
Wednesday, June 12: 1pm-3pm PDT
Thursday, June 13: 9am-11am PDT
Wednesday, June 19:
1pm-3pm PDT
Thursday, June 20: 2pm-3pm PDT

*Play windows are used to make sure players are able to match on the server (all times are in Pacific/San Francisco). We cannot guarantee that players will be matched with other players outside of these windows. Our team members will host play windows twice each week.

**If you encounter long wait times, software glitches, or bugs, please send our team an email at

***To get more information regarding the experiment and to be added to our mailing list, use the Contact form or email: