[Potrock]

What this is

The eight changes from the balance comparison against Civ V and VI.

Maps. Duel 32×22, Small 46×32, Standard 56×36, Large 70×44, Huge 88×56. Each gives a civ about the land it gets on Civ V's map for the same number of players. Natural wonders follow Civ V's count for that size, 2 to 6, so Large goes from 6 to 5. On the biggest maps, replays record tiles in three digits, so Huge keeps its replay. An oasis on a river is now flood plains. The bigger maps showed a bug where the oasis pool drowned the middle of its tile.

Combat.

• Spearmen and Pikemen get +50% against mounted units, not +100%.
• Siege gets +200% against cities, no defence from hills or woods, and one tile of sight.
• Armour has no penalty at cities and can move after attacking.
• The Anti-Tank Gun and Helicopter Gunship get +100% against armour. The Bazooka fires at range 1.
• Unit numbers now match Civ V: costs, moves, ranges and strengths, plus the unique units' promotions. Tests cover the Impi's and the Cossack's promotions, so effects-coverage stays at main's three unread effects.
• A corps's or army's bonus now multiplies the other modifiers instead of being added to them. Its gold upkeep is Civ VI's 1.5 and 2 units. Formations still cost their full resources.

Strategic resources. Deposits come in Civ V's sizes: large Iron 6, Horses 4, Coal 7, Oil 7, Aluminum 8, Uranium 4. Small ones are 2 or 3. They are placed by Civ V's ground lists and spacing, with sea Oil and a minor deposit near each city-state. Every start is still guaranteed each strategic nearby.

Luxuries by region. This ports Civ V's AssignStartingPlots.

• Each civ's region gets a type of its own, placed around its start and through the region.
• Each start gets a second type close by.
• City-states get three types of their own.
• The rest are scattered, and some types are left off each map (11 on Duel, 2 on Huge).

One deviation from Civ V: a region's type must be one that can be placed within 3 tiles of its start. Without that, about 5% of civs had none of their own type nearby.

Yields and Bison.

• Resource yields now match Civ V.
• Wheat, Iron, Gold, Silver, Gems and Copper add nothing beyond their improvement.
• Sheep and Salt give +1 food when improved. Fish gives 1 food. Oil gives +3 production.
• Ivory, Furs and Truffles give +1 gold. Citrus, Cocoa and Crab give 1 food and 1 gold.
• New: Bison, a bonus on open plains and grassland. It gives 1 food, and a Camp adds +1 production. It has a model from tools/resources.mjs, an icon and a Civilopedia entry.

Not ported: Civ V's extra luxuries for low-fertility starts.

Map generation takes 11 to 75 ms a map. Across 140 test maps, each civ got at least 5.5 Iron, 5 Horses, 3.5 Coal, 6.9 Oil, 2.8 Aluminum and 2 Uranium.

Screenshot or clip

None. The visible changes are the bigger maps, a different resource spread and the Bison model.

Checklist

• npm run build passes (type-check, the boundary check, the bundle)
• npm run test:headless passes: the four Blockilization files pass locally, and CI runs the full set. The game's rule cases pass 289 of 289.
• A game imports only from @platform / @platform/client, and is listed in src/games/browser.ts and src/games/server.ts with a cover.webp
• Names are original (parody welcome, no real trademarks)
• Assets are my own, generated in the repo, or MIT-compatible (sources below): the Bison model is generated by tools/resources.mjs

🤖 Generated with Claude Code

https://claude.ai/code/session_01DJp3oDGF1p3b1w297oSHYf