Ballparks

In short

There are five run maps (Sandlot Field, Farmyard, Windy City Yard, Midnight Yard, Moon Stadium) and one practice park (Scoreboard Smash, batting cage only). The order of db.ballparks is the unlock order, and each step along it multiplies every inning goal by 1.15.

How it works

1. DefaultContent.Build() creates every park with Park(id, name, description, lf, cf, rf, wallFt, grass, wall) and then sets its extras (wind, gravity, sky, targets, special ball, final boss, look).
2. db.ballparks.AddRange(new[] { sandlot, farm, windy, midnight, moon }) sets the unlock order. The first map is always open. Beating a map on Medium opens the next one (see Map Select and Unlocks).
3. db.practiceParks.Add(smash): practice parks are only in the Batting Cage. They are never run maps, never unlocked and not in the co-op lobby.
4. A run is played at one park. Its wall, wind and gravity feed Hit Physics; its batterModifiers are added to the batter’s stats for every at-bat there (Stats); its balls list feeds Special Balls; its targets feed Scoring.
5. Each run map has its own final boss (finalBossId) who always pitches inning 9 there and nowhere else (Pitchers and Bosses).
6. The map select screen is a carousel (#39): parks slide left to right in unlock order, and the centred card shows a picture of the park taken at runtime (UI/ParkSnapshots, built and photographed once per session), its NORMAL / MEDIUM / HARD and PLAY. See Map Select and Unlocks.
7. The batting cage lists every run map in unlock order, then the practice parks. The INDEX’s BALLPARKS tab lists the practice parks first (subtitle “Batting cage”), then the run maps (Index Screen).

Comparison

Park	id	Order	LF / CF / RF (ft)	Wall (ft)	Gravity	Wind	Sky	Night	Stadium	Special ball	Final boss
Sandlot Field	sandlot	1	300 / 360 / 300	8	x1	none	ClearDay	no	yes	$$$ (Money), any pitch, 1 in 6	Backyard Benny (benny)
Farmyard	farm	2	310 / 380 / 315	6	x1	6 mph toward 20°	ClearDay	no	no (open field)	Sticky, changeup / curveball / knuckleball, 1 in 3	Farmer Fitz (farmer)
Windy City Yard	windy	3	330 / 400 / 340	12	x1	12 mph toward -30°	Overcast	no	yes	Super Fast, fastball / slider, 1 in 3	The Gale (gale)
Midnight Yard	midnight	4	330 / 400 / 330	10	x1	none	Night	yes	yes	Ghost, any pitch, 1 in 12	The Phantom (phantom)
Moon Stadium	moon	5	380 / 450 / 380	20	x0.75	none	Space	no	yes	Anti-Gravity, curveball / sinker / changeup, 1 in 3	The Alien (alien)
Scoreboard Smash	smash	practice	280 / 300 / 280	8	x1	none	ClearDay	no	no (open field)	none	none (never a run map)

Park	Batter modifiers	Targets	Ground / wall	Dressing
Sandlot Field	none	Billboard x2, Treehouse x3	Mowed / Padded	none
Farmyard	none	Left Bullseye x3, Barn x2, Right Bullseye x2.5	Sandlot / WoodFence	farm code layout (ParkLayouts.BuildFarm)
Windy City Yard	none	Rooftop x2, Lake x3	Mowed / Padded	none
Midnight Yard	-10% Timing Window	Neon Sign x2.5	Mowed / Padded	none
Moon Stadium	none	8 bonus locations, +50 to +200 points	Lunar / Padded	moon code layout (ParkLayouts.BuildMoon)
Scoreboard Smash	none	none (break the scoreboard)	Mowed / Padded	none

Every run map sets finalBossId (all five park bosses came in #41, the Phantom boss PR). Their own balls: Benny throws Wiffle balls, The Gale Headwind / Tailwind gusts, The Phantom decoys; Farmer Fitz and The Alien have none yet. Where a park’s ball rides only some pitches (Farmyard, Windy City, Moon), pitchers lean on those pitches, about 70% of the time (PitcherAI.FavouredShare).

Numbers

Goal scaling by park (RunState.InningGoal): inningGoal x inningGoalGrowth^inning x (bossGoalMultiplier if boss) x mapGoalGrowth^order x difficulty, rounded to the nearest 25 (minimum 25). See Run Config and Difficulty.

Park	Order index	Goal multiplier (1.15^order)	Inning 1 goal, Normal	Inning 9 goal, Normal
Sandlot Field	0	x1	500	3725
Farmyard	1	x1.15	575	4275
Windy City Yard	2	x1.3225	650	4925
Midnight Yard	3	x1.520875	750	5675
Moon Stadium	4	x1.74900625	875	6525

Full per-inning goals are in each park’s note. Defaults for a park field not set in DefaultContent:

What	Default	Where to tune
leftFieldFt / centerFieldFt / rightFieldFt	330 / 400 / 330	BallparkDefinition
wallHeightFt	10	BallparkDefinition
gravityScale	1 (gravity = 9.81 m/s² x scale)	BallparkDefinition.GetEnvironment
crowdDensity	0.75	BallparkDefinition
stadium	true	BallparkDefinition
sky / ground / wallStyle	ClearDay / Mowed / Padded	BallparkDefinition
Target multiplier	2	OutfieldTarget

In the code

File	What it does
Assets/_Project/Scripts/Data/DefaultContent.cs	Defines every park and the unlock order (db.ballparks, db.practiceParks)
Assets/_Project/Scripts/Data/BallparkDefinition.cs	Fields, OutfieldTarget, SkyPreset, GroundStyle, WallStyle; WallDistanceFt, GetEnvironment, DescribeModifiers
Assets/_Project/Scripts/Run/RunState.cs	InningGoal uses the park’s index in ballparks
Assets/_Project/Scripts/Ballparks/ParkLayouts.cs	Code-built dressings for farm and moon
Assets/_Project/Scripts/Ballparks/SkyBuilder.cs	Sky per SkyPreset
Assets/_Project/Scripts/UI/MapSelectView.cs	The park carousel; UI/ParkSnapshots takes each card’s picture

Gotchas

• The wall distance between the three values is a straight lerp by spray angle: WallDistanceFt clamps spray to ±45° and lerps from center to the line.
• Reordering db.ballparks changes both the unlock order and every park’s goals.
• farm.dressing and moon.dressing point at Parks/farm_Dressing and Parks/moon_Dressing, but there is still no Resources/Parks folder at 45a2167, so both parks use their code layout from ParkLayouts.
• The game loads Resources/ContentDatabase if it exists; at 45a2167 there is none, so DefaultContent is the live data.
• The README’s roadmap still says “Starter ballparks (4 maps)“. The code has five run maps plus one practice park.
• Midnight’s Ghost ball changed in #41 from changeups and knuckleballs at 1 in 4 to any pitch at 1 in 12.

Related

• Map Select and Unlocks: how maps and difficulties open
• Ballpark Building: how the field, stands and props are built
• Special Balls: what each park’s ball does
• Scoring: how targets pay
• Pitchers and Bosses: each park’s final boss
• Add a Map: adding a new park