Collision size

Collision size is a unit's internal size that cannot be passed through by other units. This allows units to block each other with their bodies. Most heroes have the same collision size, regardless of their graphical model. Phased status allows units to ignore collision size.

Collision size comparison

Heroes

Heroes	Collision size
Lycan, Monkey King, Naga Siren, Phantom Lancer	8
Abaddon, Alchemist, Ancient Apparition, Anti-Mage, Arc Warden, Axe, Bane, Batrider, Beastmaster, Bloodseeker, Bounty Hunter, Brewmaster, Bristleback, Broodmother, Centaur Warrunner, Chaos Knight, Chen, Clinkz, Clockwerk, Crystal Maiden, Dark Seer, Dark Willow, Dazzle, Death Prophet, Disruptor, Doom, Dragon Knight, Drow Ranger, Earth Spirit, Earthshaker, Elder Titan, Ember Spirit, Enchantress, Enigma, Faceless Void, Grimstroke, Gyrocopter, Huskar, Invoker, Io, Jakiro, Juggernaut, Keeper of the Light, Kunkka, Legion Commander, Leshrac, Lich, Lifestealer, Lina, Lion, Lone Druid, Luna, Magnus, Medusa, Meepo, Mirana, Morphling, Nature's Prophet, Necrophos, Night Stalker, Nyx Assassin, Ogre Magi, Omniknight, Oracle, Outworld Devourer, Pangolier, Phantom Assassin, Phoenix, Puck, Pudge, Pugna, Queen of Pain, Razor, Riki, Rubick, Sand King, Shadow Demon, Shadow Fiend, Shadow Shaman, Silencer, Skywrath Mage, Slardar, Slark, Sniper, Spectre, Spirit Breaker, Storm Spirit, Sven, Techies, Templar Assassin, Terrorblade, Tidehunter, Timbersaw, Tinker, Tiny, Treant Protector, Troll Warlord, Tusk, Underlord, Undying, Ursa, Vengeful Spirit, Venomancer, Viper, Visage, Warlock, Weaver, Windranger, Winter Wyvern, Witch Doctor, Wraith King, Zeus	24

Units

Units	Collision size
Undying Zombie	4
Astral Spirit, Beetle, Earth, Eidolon, Fire, Frozen Sigil, Healing Ward, Lycan Wolf, Mega Ranged Creep, Necronomicon Archer, Nether Ward, Nimbus, Observer Ward, Phantom, Proximity Mine, Psionic Trap, Ranged Creep, Sentry Ward, Serpent Ward, Spiderite, Spiderling, Spin Web, Stasis Trap, Storm, Super Ranged Creep	8
Death Ward, Familiar, Forged Spirit, Greater Treant, Mega Melee Creep, Melee Creep, Necronomicon Warrior, Plague Ward, Siege Creep, Skeleton Warrior, Super Melee Creep, Super Siege Creep, Tombstone, Tornado, Treant, Wraith King Skeleton	16
Alpha Wolf, Ancient Black Dragon, Ancient Black Drake, Ancient Granite Golem, Ancient Prowler Acolyte, Ancient Prowler Shaman, Ancient Rock Golem, Ancient Rumblehide, Ancient Thunderhide, Boar, Centaur Conqueror, Centaur Courser, Dark Troll Summoner, Fell Spirit, Ghost, Giant Wolf, Harpy Scout, Harpy Stormcrafter, Hawk, Hellbear, Hellbear Smasher, Hill Troll, Hill Troll Berserker, Hill Troll Priest, Homing Missile, Kobold, Kobold Foreman, Kobold Soldier, Mud Golem, Ogre Bruiser, Ogre Frostmage, Phoenix Sun, Remote Mine, Roshan, Satyr Banisher, Satyr Mindstealer, Satyr Tormenter, Shard Golem, Spirit Bear, Vhoul Assassin, Warlock's Golem, Wildwing, Wildwing Ripper	24
Power Cog	80

Buildings

Buildings	Collision size
Effigy Building, Shrine	96
Fountain, Melee Barracks, Ranged Barracks, Tier 1 Tower, Tier 2 Tower, Tier 3 Tower, Tier 4 Tower	144
Ancient	298

Mechanics Stats Armor Attributes (Strength / Agility / Intelligence) Collision size Health (Health regeneration) Magic resistance Mana (Mana regeneration) Movement speed Status resistance Turn rate Vision Attack Attack animation Attack damage Attack modifier (Bash / Cleave & Splash / Critical strike / Lifesteal / Mana break) Attack range Attack speed Cast animation Cast range Damage types Motion buffer range Projectile speed Spell damage Spell lifesteal Abilities Abilities Aura Channeling Damage block Damage manipulation Damage over time Evasion Talents Teleport Status effects Attack immunity Break Cyclone Disable Disarm Ethereal Fear Forced movement Hex Hide Invisibility Invulnerability Root Silence Sleep Slow Spell immunity Stun Taunt World Experience Gold Glyph of Fortification Map (Minimap) River Scan Runes Time of day Trees Gameplay Creep control techniques Denying Disjoint Dispel Ganking Harassment Hero complexity Initiating Item passive stacking Item sharing Jungling Lane Pushing Random distribution Roles Trap Units Ancient creeps Buildings Couriers Creep-heroes Heroes Illusions Lane creeps Neutral creeps Roshan Summons & Wards