v31: Clan System + Water Nukes + Inland Water Trading

Major New Mechanics

Clan system: A full clan management interface — browse, join, kick, ban, transfer leadership; open / invite-only modes; personal ranking lists sorted by game mode. Clan stats are tracked by clan tag (v31 doesn’t enforce tag usage, v32 will).
Water Nukes: A new game option where nukes turn land tiles into water. Maps may be completely reshaped by late game.
Lake / inland water trading: Ports, trade ships, and Warships are no longer restricted to oceans — any body of water works. Caucasus, Great Lakes, and similar maps benefit directly.
Multi-Warship selection: Shift+drag (or long-press) to batch-select Warships and command them together.
Warship retreat: Damaged Warships auto-retreat (marked with a black cross in the center); target priority changed to Transport > Warship > Trade.
Warship port healing: Friendly ports auto-heal nearby Warships, with healing slots scaling by port level.
Host cheats (private lobby): Toggle infinite gold, infinite troops, and starter resource packs.
Paid currency cosmetics: In addition to Stripe, you can now spend in-game Plutonium / Caps on cosmetics.
Frontline troop hover: Front-line tiles display real-time attacker / defender counts, color-coded to show who’s winning.
Alliance / betrayal hotkeys: K to request an alliance, L to break it — saves a menu expansion.
Sound effects (15): Full SFX set for nuke explosions, building, alliances, messages, and menus.

Key Balance Changes

Item	Old	New	Impact
Kill payout (gold)	100%	50%	Slows snowballing, large players can’t sweep in one fight
SAM cooldown	12 sec	9 sec	v30’s 12 sec was too slow, dialed back to 9
Silo cooldown	7.5 sec	9 sec	Nuke pacing slowed overall
Nuke speed	6 tile/tick	8 tile/tick	Reaction window shortened again
Port build time	2 sec	5 sec	Naval openings are slower
Attacker loss ratio	Lower	60 / 40	Attackers pay slightly more than in v30
Tribes	Standard strength	Weakened	Speeds up early expansion
Transport ship → auto-reject alliance	None	Sending transports auto-rejects incoming alliance requests	Fake alliance exploit continues to be patched

New Modifiers (Public lobby)

Ports Disabled, Nukes Disabled, SAMs Disabled, 1M Starting Gold, Water Nukes, 4min Peace Time.

Maps (13 new / changed)

Milky Way (NASA galaxy map, dark mode recommended), Mare Nostrum (Mediterranean Rome vs. barbarians), Great Lakes (heavy trade map, city NPCs), Strait of Malacca (world’s largest trade chokepoint), Luna (symmetric Moon), Caucasus (Black Sea / Caspian dual inland waters), Bering Sea (replaces Bering Strait), Antarctica (all seven continents covered), Archipelago Sea (Finland-Aland), Conakry, Baja California, Los Angeles (highways as rivers), Dyslexdria (April Fools return). Aegean rebalanced.

Nation AI

Public-lobby Nations are no longer farmed for cities: when attacked, they build DefensePost instead of City.
Hard / Impossible Nations on teams: automatically stop trading with the enemy, don’t skip the strong, optimize save-up.
In 5M Gold HvN, no more flash-build at the start.
Port distribution is more even.

Strategies Players Should Adjust

Kill payout halved: Eating a big player’s gold only yields 50% — don’t grind into a fortified player just for gold, let teammates / Nations bleed them for you.
Water Nukes matches reshape terrain: When this mode is on, maps may be completely redrawn in the late game. Plan a high-elevation safehouse in advance.
Lakes are naval theaters too: On maps like Caucasus / Great Lakes / Nile Delta, inland water combat becomes a routine tactic.
Warships heal at ports: Beyond trade income, ports’ healing slots now matter for choosing when to retreat a Warship. Upgrade more ports, gain more safe harbors.
K / L hotkeys: High-level matches no longer need menu expansion to ally / unally — alliance tempo is faster.