Halo 3 maps in the careerdb xml file:
- 300: construct: map_id_halo3_construct
- 350: salvation: map_id_halo3_epitaph
- 320: guardian: map_id_halo3_guardian
- 310: deadlock: map_id_halo3_high_ground
- 330: isolation: map_id_halo3_isolation
- 30: zanzibar: map_id_halo3_last_resort
- 380: chill: map_id_halo3_narrows
- 400: shrine: map_id_halo3_sandtrap
- 360: snowbound: map_id_halo3_snowbound
- 390: cyberdyne: map_id_halo3_the_pit
- 340: riverworld: map_id_halo3_valhalla
- 410: bunkerworld: map_id_halo3_standoff
- 580: armory: map_id_halo3_rats_nest
- 480: warehouse: map_id_halo3_foundry
- 470: sidewinder: map_id_halo3_avalanche
- 520: lockout: map_id_halo3_blackout
- 590: ghosttown: map_id_halo3_ghost_town
- 600: chillout: map_id_halo3_cold_storage
- 490: descent: map_id_halo3_assembly
- 500: spacecamp: map_id_halo3_orbital
- 730: sandbox: map_id_halo3_sandbox
- 740: fortress: map_id_halo3_citadel
- 720: midship: map_id_halo3_heretic
- 440: docks: map_id_halo3_longshore
- 706: s3d_waterfall: map_id_halo3_s3d_waterfall
- 703: s3d_edge: map_id_halo3_s3d_edge
- 31: s3d_turf: map_id_halo3_s3d_turf
- 301: dlc_5050
- 302: dlc_new
- 303: dlc_reuse
- 420: landslide
- 430: beachhead
- 450: pump_haus
So no direct mention of Diamondback, Reactor, or Skybridge. But there is pump_haus and possibly the firefight map Beachhead from Reach, and who knows what “landslide” is supposed to be?
For what it’s worth, Reach has it’s own set of unreleased maps:
- 1035: 50_panopticon: map_id_haloreach_boardwalk
- 1080: 70_boneyard: map_id_haloreach_boneyard
- 1020: 45_launch_station: map_id_haloreach_countdown
- 1055: 30_settlement: map_id_haloreach_powerhouse
- 1150: 52_ivory_tower: map_id_haloreach_reflection
- 1200: 35_island: map_id_haloreach_spire
- 1000: 20_sword_slayer: map_id_haloreach_sword_base
- 1040: 45_aftship: map_id_haloreach_zealot
- 2001: dlc_slayer: map_id_haloreach_anchor_9
- 2002: dlc_invasion: map_id_haloreach_breakpoint
- 2004: dlc_medium: map_id_haloreach_tempest
- 1500: condemned: map_id_haloreach_condemned
- 1510: trainingpreserve: map_id_haloreach_highlands
- 10020: cex_beaver_creek: map_id_haloreach_battle_canyon
- 10010: cex_damnation: map_id_haloreach_penance
- 10030: cex_timberland: map_id_haloreach_ridgeline
- 10070: cex_prisoner: map_id_haloreach_solitary
- 10060: cex_hangemhigh: map_id_haloreach_high_noon
- 10050: cex_headlong: map_id_haloreach_breakneck
- 3006: forge_halo: map_id_haloreach_forge_world
- 1060: stalagmite
- 999: spartanland
- 1046: powerhaus
It’s odd that 30_settlement / powerhouse and powerhaus are separate here. Don’t know what spartanland might be, but “stalagmite” sounds like a potential Waterworks remake.
That said, those are not the only potential maps in Reach:
- 7060: ff50_park: map_id_haloreach_beachhead
- 7110: ff45_corvette: map_id_haloreach_corvette
- 7020: ff20_courtyard: map_id_haloreach_courtyard
- 7130: ff60_icecave: map_id_haloreach_glacier
- 7080: ff70_holdout: map_id_haloreach_holdout
- 7030: ff60_airview: map_id_haloreach_outpost
- 7000: ff10_prototype: map_id_haloreach_overlook
- 7040: ff30_waterfront: map_id_haloreach_waterfront
- 7500: defiant_dlc_unearthed: map_id_haloreach_unearthed
- 10080: cex_ff_halo: map_id_haloreach_installation_04
- 7010: ff10_3kiva
- 7050: ff35_hill
- 7070: ff60_ruins
- 7090: ff10_incline
- 7100: ff35_facility
- 7120: ff52_crater
ff10_3kiva might be any of the settlement sites in Winter Contingency (or the first settlement site in Nightfall), ff52_crater could be Club Errera from New Alexandria, ff35_hill could be the last stand site in Lone Wolf as the relevant bsp in the level is called “set_hill”. As for the others… I don’t know, any ideas?
As for the maps in the official mod tools…
Halo 3, folder “multi”:
- chasm (only bitmaps and shaders folders are present, no s3d label so it wasn’t an intended Online map, might be an unfinished map from the Bungie-era)
- chill
- construct
- cyberdyne
- deadlock
- guardian
- isolation
- riverworld
- s3d_avalanche (Diamondback)
- s3d_edge
- s3d_powerhouse
- s3d_reactor
- s3d_sky_bridgenew
- s3d_turf
- s3d_waterfall
- salvation
- shrine
- snowbound
- zanzibar
The various maps from the Heroic/Legendary/Mythic map packs (and Cold Storage) are in a separate folder (“dlc”) but there’s nothing new there.
(Meanwhile, there’s a s3d_tutorial folder in the folder for the campaign maps…)
As for Reach:
No new maps in the default “multi” folder, but there are some other interesting subfolders in there… like this “archive” subfolder:
- blackout_nwo
- bunkerworld_dlc
- bunkerworld
- cyberdyne
- deadlock
- farm
- guardian
- shrine
- sidewinder
- snowbound
- spartanland
Don’t know what “farm” might have been, but Guardian, The Pit, Blackout, and Sandtrap in Reach (realized in a form other than an assortment of soulless Forerunner bricks; eg. in Forge) would have been nice. Sandtrap might even have been reformatted into a “desert Forge World”.
Also, in a subfolder designated as “classic”:
- ascension
- guardian
- ivory_tower
- lockout
- sanctuary
See above, but with Sanctuary too? (As said before, in a format other than aforementioned generic Forerunner bricks…)
Subfolder designated “dlc”:
- beachhead
- dlc_invasion (Breakpoint)
- dlc_medium (Tempest)
- dlc_slayer (Anchor 9)
The actual “dlc” folder:
- cex_beaver_creek
- cex_damnation
- cex_ff_halo
- cex_hangemhigh
- cex_headlong
- cex_prisoner
- cex_timberland
- condemned
- descent
- ff_unearthed
- midship
- trainingpreserve