Ask · Reveal · Act
Dota 2 vision and True Sight: turn sight into a decision
Useful vision answers a current question before the answer expires. Identify what the team needs to know, choose a source that can reveal it through today’s terrain, and connect the information to a movement, fight, farm, or objective decision.
Reviewed August 28, 2026. Vision ranges, terrain, ward behavior, detection, invisibility, Smoke interactions, hero abilities, items, structures, and objectives can change. Read current tooltips and the live map and check Valve’s official Dota 2 updates after gameplay patches.
Vision is an information chain
A deep ward can show several heroes while protecting no usable action. A controlled unit can reveal one entrance and save an entire objective attempt. True Sight can detect an invisible target while the team still lacks the ordinary sight, range, or position needed to act. Evaluate vision by the decision it changes, not by how much of the minimap it colors.
Vision rule: name the question, who can safely answer it, who can use the answer, and which changed fact tells the team to stop trusting it.
The five-step vision test
- Name the question. Choose the hero, route, approach, objective entrance, teleport, farm area, fight angle, retreat, or invisible threat the team must understand.
- Choose the source. Identify the hero, unit, ward, structure, spell, item, objective effect, or teammate whose current behavior can supply the answer.
- Test the sight line. Account for day or night, range, elevation, trees, terrain, blockers, source movement, duration, and whether sight or detection is needed.
- Price denial and safety. Decide who can establish the source, how the enemy can remove or avoid it, which countervision is needed, and where the user exits.
- Assign the action. Connect the answer to movement, a fight, farm, a ward or deward, Smoke, an objective, a rescue, or a reset before its relevance expires.
Separate ordinary sight, detection, and other reveals
Ordinary vision
Determines what the team can see through the source’s current sight rules. Range, elevation, trees, blockers, day and night, movement, and source type may shape the visible area.
True Sight
Detects applicable invisible units or objects within the current source rules. Detection does not mean every concealed state behaves alike, and it does not replace every ordinary sight requirement.
Ability or item reveal
A spell or active may provide vision, detection, tracking, a debuff, a location hint, or a different reveal behavior. Read exactly what today’s tooltip grants and how it can be removed.
Indirect information
Waves, projectiles, sounds, animations, missing units, broken movement states, objective behavior, and enemy reactions can narrow possibilities without making the target directly visible.
Do not treat invisibility, Smoke, fog, trees, elevation, and untargetability as synonyms. Ask which state is active, which current source interacts with it, whether the team can see the location, and whether the intended action requires a visible or targetable unit.
Choose the source that fits the question
Hero or controlled unit
Mobile sight can check a route or angle, but it risks health, position, concealment, and control of the unit. Send only what the question is worth.
Observer or detection resource
A persistent source can protect repeated actions. Price placement risk, current range and duration, likely denial, inventory, and whether allies can use the area.
Spell or item
A temporary reveal may answer first contact or invisible threat more safely. Price cooldown, mana, charges, cast requirements, removal, and the action that follows.
Structure, objective, or lane unit
Existing map pieces may reveal an approach or defender without another purchase, but their current sight, survival, movement, and timing can change quickly.
Teammate information
A ping, call, shared vision source, or visible enemy response can answer the question. Confirm the timestamp and avoid treating old information as current location.
Read terrain, trees, elevation, and blockers from the live map
Before entering
- identify the upper area, tree line, corner, choke, objective edge, or structure that can hide the response;
- choose the source and angle that reaches the uncertain space;
- check which allied action depends on that information;
- keep a route that does not require walking through the same blind point.
After revealing
- update targets, reinforcements, teleports, saves, and counter-initiation;
- notice which hidden area the team stopped covering;
- expect movement after the enemy learns it was seen;
- leave or replace the source when terrain, trees, units, or objectives change the question.
Elevation can create information and attack interactions, but “high ground” is not a universal command to commit or defend. Read the current line of sight, attack rules, paths, units, vision sources, and objective geometry. The Teamfight Positioning guide turns that information into a changing fight formation.
Recheck every source when day or night changes
Prepare the route and question
Read the match clock and current source behavior. Decide which farm path, gank, ward, objective entrance, fight angle, or retreat becomes easier or harder when sight changes.
Update visible and missing space
Recheck heroes, controlled units, structures, wards, abilities, and items. Different sources may respond differently; current unit panels and tooltips are the evidence.
Move on the new information
Contract, scout, ward, group, split, smoke, pressure, or reset according to the new sight relationships and enemy positions—not merely because the clock changed.
A timer is a cue to inspect the map, not proof that a gank or push is safe. Hero-specific vision, temporary night or day effects, terrain, wards, spells, and visible enemy movement can outweigh the generic cycle. Confirm the active state in the current match.
Ward the approach, hero, or response that matters next
- Define the user. Name the farming hero, smoke group, defender, initiator, objective hitter, scout, or retreating teammate who will use the information.
- Define the subject. Choose the approach, defender, teleport, farming route, objective entrance, fight angle, or exit the ward must reveal.
- Check today’s geometry. Preview the current placement area, elevation, blockers, trees, likely movement, and the difference between theoretical range and usable sight.
- Price the placement. Include the placer’s route, enemy positions, inventory, countervision, likely deward pattern, duration, and the opportunity cost elsewhere.
- Plan the response. State whether the team fights, leaves, calls missing, redirects farm, teleports, smokes, dewards, or changes objective when the ward answers the question.
The Warding guide contains current source-specific values and placement workflow. Treat those values as live evidence, not permanent memory: recheck the client and official updates whenever a gameplay patch changes vision or the map.
Reduce what the opponent can safely know
Remove the source
Use current detection and attacks to deward or remove a scouting unit when the route, resource cost, and risk are justified by the decision it protects.
Change the answer
Move by another route, delay, show a different hero, split the formation, or force a response so the observed information no longer describes the intended action.
Punish the user
If removing vision is unsafe, position threat near the revealed space so acting on the information carries a cost or exposes another objective.
Dewarding can reveal your hero, movement, inventory, or intended objective. A suspected ward is not automatically worth a dangerous detour. Ask what decision it enables, how long that decision remains relevant, and whether concealment, a route change, false information, counterpressure, or simply leaving creates more value.
Move through uncertainty with bounded questions
Account for missing heroes
Use last-seen time and location, lane states, likely movement, teleports, objectives, items, cooldowns, and hero mobility to bound what can reach the route.
Scout proportionally
Risk a lower-cost unit, spell, short movement, disposable source, or safer angle before exposing the hero or resource the enemy wants most.
Preserve reinforcement
Check whether allies can arrive, provide sight, save, interrupt, or punish before the unseen response completes its action.
Set the abort trigger
Turn around when a source disappears, a hero stays missing too long, a wave changes, Smoke breaks, an objective state changes, or the safe route closes.
Smoke changes information, not the need for a plan. Read its current tooltip and use the Smoke guide to prepare lanes, starting information, route, first contact, conversion, and exit without relying on a frozen break radius or permanent “safe path.”
Use vision across the whole fight
Find the threat, target, reinforcement route, and terrain edge that determine first contact. Conceal only actions that can still reach in time.
Update which heroes, summons, wards, items, abilities, and teleports have appeared. Do not keep attacking the approach-state target automatically.
Replace lost sight, follow movement, detect applicable concealment, and protect the angle for the next damage, control, save, or interrupt.
Use remaining information to chase, rescue, ward, deward, take an objective, protect a lane, or leave before missing threats close the route.
Relearn sight lines after major map updates
New Frontiers changed routes and objectives
Valve’s New Frontiers update documents major changes to map scale, terrain, paths, objectives, and systems—the physical relationships that decide what a source can reveal and who can act on it.
Wandering Waters changed geography again
Valve’s Wandering Waters update is further evidence that water, elevation, trees, routes, and objective areas must be inspected on the live map rather than inherited from a ward diagram.
A focused vision replay drill
- Choose one failed action. Use a death, missed gank, unsafe farm route, failed ward, bad deward, Smoke break, objective contest, fight entry, or retreat.
- Pause before commitment. Record the exact question, visible heroes and units, missing threats, sources, day or night, terrain, lanes, objectives, and safe routes.
- Separate known from assumed. Mark which facts came from current vision, detection, indirect evidence, old information, prediction, or no evidence.
- Find the first bad link. Identify whether the question was wrong, the source could not answer it, terrain blocked it, the enemy denied it, the team could not act, or the answer expired.
- Write one observable check. Replace “we need more vision” with a specific source, question, action, and abort trigger for the next comparable state.
Dota 2 vision and True Sight FAQ
What is the difference between vision and True Sight?
Ordinary vision determines what your team can see through current line-of-sight rules. True Sight detects applicable invisible units or objects. Detection and sight are separate requirements, so read the source tooltip and confirm the target is both detected and visible.
Why can I not see enemies on high ground?
Elevation and line-of-sight rules can block sight into an upper area. Use a source that reaches it, change angle, move a unit, reveal with an ability, or avoid entering until the important question is answered.
Where should I place a ward?
Place it where its current sight answers the next decision: an approach, defender, farming route, objective entrance, teleport response, fight angle, or retreat. Price placement safety, denial, duration, terrain, and who can act.
How do I review a vision mistake?
Pause before commitment, name the exact information the team needed, list the available sources, and find the first assumed fact. Replace that assumption with one observable check or safer route.