History Main / EnemyDetectingRadar

!!Non Video Game Examples:

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[[folder: Stealth|Based Game ]]

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** ''Pokémon'' has one of these for items, creatively called the "Item Finder." Over time it's evolved from a somewhat unhelpful noise maker if you were within 50 yards of something, to a "[=DowsingMCHN=]" that points out the ''EXACT'' location of a hidden item. It wasn't until ''Fire Red'' and ''Leaf Green'' that players got access to the "Vs. Seeker," which could detect trainers. That is, those who wanted to battle or have a rematch ''and'' were onscreen.

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* The 3D ''VideoGame/GrandTheftAuto'' games has a minimap (sometimes called a radar) in-game. At times, it will show a mission objective or a moving enemy.
** The LetsPlay/FreelanceAstronauts made fun of this in their LetsPlay of ''VideoGame/GrandTheftAutoViceCity, coming to the conclusion that most missions involve "Killing the pink dot on the radar."

* ''VideoGame/EnemyZero''. Picture this: you're on a spaceship out in the middle of nowhere, and a bunch of nasty aliens have come aboard and murdered everyone save you and a few others. Problem is, the aliens are '''completely invisible''', and you get to roam the corridors of the ship, completely unable to see them. Your only way of knowing they're around is a sonar-ish device that starts pulsing louder and faster depending on how close the aliens are, all of which is absolutely nerve-wracking. The slightest peep will have you spooked, to say nothing when the aliens can be heard growling close by. BringMyBrownPants, please.

* ''Franchise/MassEffect'' features both EnemyDetectingRadar and Radar-Jamming Enemies, specifically geth. But the geth radar-jamming is more of a nuisance than anything else: its range is short enough that they only jam you when they're about to attack (meaning they can't really ambush an attentive player), and their flashlight heads are kind of a giveaway as to their location, even in thick fog.

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* Since SpiderMan has a SpiderSense that alerts him to danger, games featuring him have it as part of the gameplay.

** The Creator/{{Firaxis}} reboot has two:

* The classic ''VideoGame/XCom'' series uses two types:
** On the geoscape, bases need radar arrays (or sonar in the case of ''[[VideoGame/XCOMTerrorFromTheDeep Terror From the Deep]]'') to locate [=UFOs=]. These come in three sizes with increasing range, and the most advanced type will give detailed information on alien craft and their missions.
** On the battlescape, troopers can carry a Motion Scanner (Particle Disturbance Sensor in ''Terror From the Deep'') that will detect units that have moved since the player's last turn, even through walls. However, it doesn't differentiate between friend or foe, has a VERY basic display (for instance, a large contact can be either a large unit or a small unit moving quickly), and is rather short range.

* A staple of ''Franchise/MetalGear'' games;

** Calling a UAV or Recon Plane (depending on the setting) will periodically give you all enemy positions every few seconds. Oddly enough, even if said enemies are inside concrete bunkers with no windows. ''Modern Warfare 3'' includes an "Advanced UAV" that updates more often, while the ''[[VideoGame/CallOfDutyBlackOps Black Ops]]'' games include, respectively, an SR-71 Blackbird, an [[VideoGame/CallOfDutyBlackOps2 "Orbital VSAT"]], and a [[VideoGame/CallOfDutyBlackOps3 "High Altitude Telemetry Reconnaissance"]] vehicle that show the positions of enemies in real-time (marking them as red chevrons) and, except for the H.A.T.R., can't be shot down like the standard UAV.
** Using tools/perks like UAV Jammer, Camouflage, Cold Blooded, [[VideoGame/CallOfDutyBlackOps Gh]][[VideoGame/CallOfDutyBlackOps2 o]][[VideoGame/CallOfDutyBlackOps3 s]][[VideoGame/CallOfDutyInfiniteWarfare t]], Assassin, [[VideoGame/CallOfDutyGhosts Off the Grid]], [[VideoGame/CallOfDutyAdvancedWarfare Low Profile]] or even simply shooting the UAV down will hide you from this sort of detection.

** In the original ''VideoGame/CommandAndConquer'' games, you didn't have a minimap unless you built a Radar Dome, which would then show off the entire map (though areas covered by the shroud would appear as black space). Additionally, the later games added ways of detecting stealth units (typically, light vehicles might have sensors which would revealed their location, meaning that players would be well advised to keep a few stealth detecting units around to avoid being ambushed).
** Though there were a few missions in the series that gave you the minimap even without a Communications Center (though those missions usually were the ones before you could build a Comm. Center, or those with no base at all).
* ''VideoGame/CommandAndConquerGenerals'': The USA can use a satellite scan (and have radar access) right off the bat as long as they have Command Centers, an ability that can eventually be researched by the GLA for their Radar Vans. The Chinese don't get it, instead having to rely on the detection capabilities of their troop crawlers.

* The ''StarOcean'' games have a radar when battling the enemy to show the relative positions of your team and the enemy's.

* The [[OurAngelsAreDifferent Divine Herald]] from ''[[NexusWar Nexus Clash]]'' can detect when there are demons in the area. Unlike some examples of this trope, the Herald can only find out how many demons are nearby this way and not quite exactly where they are, and it may take a few pings of the radar to triangulate the location of their target.

* ''FatalFrame'' has two: the Camera Obscura's filament, and the main character's heartbeat. The filament glows when a ghost is nearby, and glows brighter if you're facing the ghost and/or getting closer to it. The character's heartbeat also speeds up the closer a ghost is. This is quite handy, because it is a common situation that ghost can be near you and you can't ''see'' it, either because it's in a wall or it's invisible at the time.

* All three ''VideoGame/MetroidPrimeTrilogy'' games have this as a function of Samus' suit; in prior ''Franchise/{{Metroid}}'' titles, the overworld map screen (if there even was one) just showed whether Samus had already been in a room and if it had an item hidden in it.

* Aircraft have something referred to as "IFF", the International Friend-or-Foe system. By transmitting certain signals, aircraft can be identified as "friendly", "hostile", "civilian/neutral" or "unknown". This is a way that pilots can quickly identify which aircraft belong to their allies to avoid blowing them out of the sky.

* ''VideoGame/KingdomOfLoathing'' has a radar function in the ''[[{{Metroid}} Meteoid]]'' subgame. It doesn't begin detecting enemies until it's been upgraded, though.