Marathon, read from the game files.
Runner stats, abilities, weapon mod slots, implants and cores come straight from Bungie's Tiger packages on disk, not from a wiki. When the game updates, one command rebuilds everything.
Runners
Every shell with its prime, tactical and trait abilities, lore and its real base stats.
Weapons
All weapons with their mod slots and every mod that fits each slot.
Weapon mods
Optics, barrels, mags, grips, chips and generators, with the stat changes and the guns they fit.
Implants
Head, torso, leg and shield implants with their perks and rarities.
Cores
Shell-specific cores that change how each runner's abilities work.
All items
Search every item definition: consumables, keys, salvage, valuables, backpacks, cosmetics.
Zones
Perimeter, Dire Marsh, Outpost and Cryo Archive: modes, points of interest, their loot and the keys that open them.
Contracts
Every faction contract line with its brief and the reputation each step pays.
Factions
CyberAcme, NuCaloric, Traxus, MIDA, Arachne and Sekiguchi.
Builder
Pick a runner, weapons with mods, implants and a core. See the stat totals and share the build.
Fan project. Not affiliated with or endorsed by Bungie. Marathon and all names and art belong to Bungie, Inc.