When your fleet arrives at its target, combat is resolved automatically. Your ships' attack power (modified by class, weapons research, and planet status) is compared against the defender's ships and their defence power. Both sides take losses. If a battleship attack succeeds, the attacker steals resources and stations from the defender. If the defender is left with 0 stations or 0 citizens, their empire collapses and is deleted after 24 hours. Keep your defences up — even if you're not attacking, others may be coming for you.
| Rule | Details |
|---|---|
| Max outbound groups | 2 destroyer groups + 2 battleship groups + 2 cloaked groups |
| Fleet lost cooldown | If all ships die, the slot is blocked until cooldown expires |
| Kill condition | 0 stations or 0 citizens = dead. Account deleted after 24 hours. |
| Power outage | Defender gets -50% defence, turrets disabled |
| Turrets | Defence only: 20 vs destroyers, 80 vs battleships. 10% destroyed on defence loss, none on win. Require power to function (100/turret/turn). |
Cloaked attacks are separate from conventional fleet combat and follow different rules entirely. Nightstalkers and Nightbringers launch hunter droids that target the defender's residences — destroying buildings and killing population. No conventional attack or defence stats apply. No ships are ever lost.
| Rule | Details |
|---|---|
| Resolves | Immediately on launch — no travel time |
| Ship losses | None — cloaked ships always return intact |
| Droids per Nightstalker | 20 (22 with Advanced Cloaking research) |
| Droids per Nightbringer | 40 (42 with Advanced Cloaking research) |
| Seeker interception | Each seeker: 50% chance to intercept 1 droid. Requires defender power > 0. |
| Advanced Seekers | Each seeker gets 2 interception rolls instead of 1; turrets destroy 7 droids instead of 5 |
| Turret interception | Each turret destroys 5 droids (7 with Advanced Seekers). Requires defender power > 0. |
| Droid strike | Each surviving droid: 50% chance to destroy 1 residence |
| Population killed | Proportional to citizens per residence destroyed |
| Outbound slot | Counts against your 2 cloaked group slots (separate from battleships) |