Orcs Must Die!

Orcs Must Die! is a Tower Defense game, developed by Robot Entertainment and published by Microsoft Studios. It was released for Xbox Live Arcade on October 5, 2011, and on Steam on October 12.

In some standard fantasy world, an old warmage of The Order has slipped on some kobold blood and cracked his head open, and now it falls to his idiot apprentice to defend a series of fortresses from hordes of orcs and their allies. Within these forts are magic rifts that the orcs must not be allowed to reach.

The game differs greatly from other Tower Defense games given it's third-person perspective, action-oriented combat and alternative mechanics. You directly control the Apprentice. You are given a assortment of traps, spells, NPC "guardians" and a few weapons to help you protect the rifts.

The plot is basically an Excuse Plot to gleefully massacre orcs to your heart's content. Not that there's anything wrong with that.

Tropes used in Orcs Must Die!:
"The Apprentice: "So, the sorceress has the orcs dancing to her... thing that makes orcs dance. Well I can make orcs dance too. And by dance, I mean die, when I poke them with my bladestaff.""
 * Acid Pool: Scattered throughout the levels along with Lava Pits.
 * Action Bomb: Kobolds strapped to bombs. Unlike regular Kobolds, they go after guardians. And you.
 * Airborne Mook: Hellbats and their annoyingly hard to hit miniature versions. Protip: Ice magic. Kills 'em dead.
 * Always Chaotic Evil: The Orcs and their allies.
 * Annoying Arrows: Your arrows do not deal a lot of damage, unless you headshot the orcs that is.
 * The Apprentice: The main character.
 * The Archer: Guardian Archers for your side, Crossbow Orcs for the enemy.
 * Arrows On Fire: The Guardian Archer's arrows can be upgraded with burning pitch. Your crossbow can also be upgrade thus, visibly changing glow color from blue to red.
 * Blade On a Stick: The Bladestaff, the Apprentice's melee weapon. His has two bladed ends, where the old warmage's had only one.
 * Blood Knight: The Apprentice is having the time of his life slaughtering Orcs.
 * Boring but Practical: The tar pit trap is one of the first trap types that the player unlocks. It does no damage, it cannot throw enemies, and its only role is to slow down invaders who walk across it. However, because this causes hordes of foes who charge in to bunch up when they reach it, it serves as a force-multiplier for Herd Hitting Attack spells and traps. As a result, it will be used in almost every level thereafter.
 * Buffy Speak:

"Old Warmage: "Now she's bound the numberless horde to her will and returns to teach the Order harsh lessons in humility and subservience. But she's in for a surprise; I'm reasonably sure my apprentice is unteachable.""
 * Cast From Hit Points: The DLC Vampiric Gauntlets' alternate fire converts hit points to mana.
 * Combos: Kill combos are worth extra points and certain achievements.
 * Convection Schmonvection: Lava pits are scattered throughout the levels.
 * Cute Kitten: The Apprentice seems to think so. He's nowhere near a Kindhearted Cat Lover, though.
 * Cycle of Hurting: Ogres can stun-lock you unless you jump away.
 * The player can do this to the enemies by means of physics manipulation, such as the wind belt, springboards, and push traps. The enemies make a costly charge through a Death Course, only to get knocked back to the start of it and be forced to run it again!
 * Cynical Mentor: The dead teacher will berate and belittle The Apprentice every chance he gets, despite The Apprentice being what can only be described as a walking Apocalypse.
 * Death Course: As a player, you'd better get good at making them or you won't survive long.
 * Difficulty Spike: Once you get to the Overpass on nightmare the game will stop taking prisoners.
 * Some might consider nightmare by itself to be this, as you no longer get any set up time before the start or between waves of orcs.
 * DLC: Two: "Artifacts of Power" adds a host of new weapons, traps and an alternate outfit for the Apprentice, "The Lost Adventures" adds a set of extra levels. One of these is an inverted version of "The Tower" from the main campaign.
 * Easy Mode Mockery: If you play on Apprentice, you can only get a maximum of two skulls, instead of the five-skull potential on harder difficulties.
 * Elemental Powers
 * An Ice Person: Ice Amulet - Fires an icy Spread Shot or an Area of Effect freeze around the Apprentice.
 * Blow You Away: Wind Belt - Fires a gust of wind to knock back multiple enemies, or can be used to grab and hold a single foe. Useful for buying time or for blowing into stage hazards.
 * Kill It With Fire: Flame Bracers - Fires an Area of Effect Fireball or lays down a wall of flame.
 * Shock and Awe: Ring of Lightning - Fires Chain Lightning or summons a storm cloud that zaps enemies passing underneath it.
 * There are also Frost Ogres and Flame Ogres who are enchanted with (read: immune to) their appropriate powers.
 * Exploding Barrels: The Bomb Barrels and Decoy Traps.
 * Exactly What It Says On the Tin
 * Fallen Hero: The Sorceress was once a member of The Order.
 * Fearless Fool: The player character is described as being the worst kind of student - foolish. Throughout the levels, he constantly shows no fear and continues to taunt both the sorceress and her hordes, despite the fact that the world appears doomed as there are not enough warmages left to stem the tide.

"Orc: "Can I be the good guy?""
 * In fact, whenever his character appears to be developing, it goes in the same direction on both accounts: his insight and budding wisdom both come with the admission that
 * Everythings Deader With Zombies: One of the last upgrades available from the Knowledge Weaver causes some orcs to rise up and fight for you when they die.
 * Fragile Speedster: Kobolds. They have an annoying habit of outrunning your traps but go down from a single crossbow bolt. This can still be damned dangerous, because the traps they dodge take time to reset, letting slower enemies make it through unharmed...
 * Genre Busting: As stated above, the game doesn't handle or play like a typical Tower Defense game, relying significantly more on you doing damage to the Orcs than your traps. Relying on traps will quickly prove suboptimal. More often than not, traps are simply there to channel, delay, soften up, and thin out the horde for the player to dispatch more easily.
 * Giant Mook: The ogres.
 * Glass Cannon: The Apprentice himself is quite fast and able to dish out a lot of damage, but he can't really take it. That is, unless you get the "Adrenaline Rush" upgrade from the elemental weaver, which doubles his health and gives him a speed boost from Bladestaff kills.
 * Guide Dang It: Some of the levels have multiple doors, allowing foes the come from multiple directions at once. However, they tend to stagger their entrance, first breaking down one door, then another in a different round, then eventually coming through both at the same time. Rarely does one begin the level with the resources necessary to cover more than one approach, meaning that the player must know which doors disgorge The Horde in what order. The player may have to resort to playing the first few rounds and then reverting just to figure what to cover when. The final level really takes the cake for this, with its four sets of paired doors.
 * Happy Dance: The better you do, the better dance you'll get!
 * Heal Thyself: Enemies occasionally drop health potions.
 * Heavily Armored Mook: Armored ogres. They can take a fair bit of punishment, and will tick a whopping 10 points off your rift's health, versus only 5 from regular ogres.
 * The Horde: The orcs and their allies.
 * Idiosyncratic Difficulty Levels: Apprentice (Easy), War Mage (Normal), Nightmare (Hard, unlockable)
 * Idiot Hero: The Apprentice is dumb as a post, relentlessly enthusiastic, and very, very good at his job. He'd be (more) insufferable if he didn't show the capacity to get worried every now and then. And, of course, it's heavily implied that his survival where seemingly all other War Mages have failed is because he is just so stupidly persistent in the face of all odds.
 * Impossibly Low Neckline: The steel weaver.
 * Insurmountable Waist Height Fence: You build them and can jump over them. The orcs have not mastered jumping.
 * While orcs may not be able to surmount the barracades, they can smash them down relatively quickly. However, they only do this when they are unable to see a path around it to a target on the other side (like a rift, guardian, or The Apprentice.) This makes them primarily useful to force orcs to walk into an area dense with lethal traps instead of just smashing a safer way around.
 * Jack of All Stats: The Knowledge Weaver essentially makes you this, offering general-use upgrades for you, guardians and traps, as opposed to the trap focus of the Steel Weaver and the weapon/spell focus of the Elemental Weaver.
 * Last of His Kind: As you progress through the campaign, the Apprentice starts to suspect that he may be the only warmage left.
 * Last Stand: The game encourages this by giving the Apprentice a sharp regeneration boost when he is near the Rift. You will live longer, but die fighting the horde there and it's all over.
 * Laughably Evil: The orcs, obviously. More than occasionally they come with comments that will draw a smile on the player's face. Sometimes they even scream out "MOMMY!".
 * Life Drain: The DLC Vampiric Gauntlets have this as their primary attack.
 * Lightning Bruiser: Gnoll Hunters, which specifically hunt you instead of going for the rift.
 * Magic Knight: The Apprentice and warmages in general.
 * Magic Mushroom: Traps consisting of these inflict a Mushroom Samba on enemies, converting them to your side.
 * Mana Meter: Used to fuel your spells and some weapon attacks. Recharges by itself slowly, but can be sped up by standing near the Rift or refilled instantly from a Mana Well. The last upgrade from the "elemental" weaver allows you to regain a portion of mana from crossbow and bladestaff kills.
 * Mercy Mode: Fail a normal (warmage) difficulty stage twice in a row and it will ask if you want to play it on easy (Apprentice) mode.
 * Mind Control: How the Sorceress is uniting and controlling the races of the orcs' world. The orcs have dialogue that indicates it, as well.
 * Mighty Glacier: The armored ogres are fairly slow, and take a ton a punishement.
 * Minion With an F In Evil:
 * Minion With an F In Evil:

"The Apprentice: "Best. Job. Ever!""
 * Mood Whiplash: Contrasting the cartoony graphical style and amusing one-liners is a rather grim plot where the heroic faction is slowly getting picked off and pushed back, and is on the brink of invasion by foes whose own world has gone to crap.
 * Mooks: The titular orcs.
 * No Animals Were Harmed: But about 9,365,148 orcs were. Er, better make that 9,367,216.
 * No Arc in Archery: Justified for the Apprentice as his is a magic crossbow. Not so justified for the elves and crossbow orcs though.
 * Our Orcs Are Different
 * Our Ogres Are Hungrier
 * One Liner: The Apprentice is a fountain of 'em.
 * The Order: The Apprentice, his master, the archers and paladins all belong to one.
 * Paladin: The Apprentice can summon them as guardians.
 * Poisoned Weapons: Gnoll Hunters have poisoned swords which slow their target when hit.
 * The player can employ similar poison in their spike traps by upgrading them, slowing down any unit hit by the spikes.
 * Portal Door: Used in a number of stages to aid your ability to travel through the level. Thankfully, only you can use them.
 * Posthumous Narration: The "old man" narrates the cutscenes.
 * Pretty in Mink: The elemental weaver.
 * Rain of Arrows: Arrow traps, or a sufficient number of elf guardians, can invoke this.
 * Reinventing the Wheel: Weaver upgrades only last for the level in which they are purchased.
 * Retirony: Apparently, Orcs retire. Well, were going to. The day after they meet the Apprentice.
 * Reward From Nowhere: The exact purpose of the Coin Forge.
 * Shield Bearing Mook: Later levels give some of the basic orcs shields. They generally only take one hit to destroy, but prevent that first hit from being a headshot.
 * Smashing Hallway Traps of Doom: The Pounder trap as well as possibly The Pusher.
 * Spike Balls of Doom: The player can use them in the swinging mace trap, where they are positioned as a weighted pendulum swinging from a ceiling mount. They are arguably one of the highest damage output traps that the player can place, but are only effective if enemies can be kept underneath their arc for long enough for it to swing by, and it can only be placed in very limited areas. It is also the most expensive single trap in the game.
 * Standard Status Effects: Enemies can be lit on fire, frozen, stunned, poisoned, bled, charmed...
 * Stone Wall: The Paladins the player can summon. They do pretty modest damage, but they are very tough, and attract any nearby enemies that attack players and guardians. They can be overwhelmed on the front line, but serve admirably as a rear-guard in a tightly packed space. The Steel Weaver can upgrade them to regenerate health and stun enemies with their sword, turning them from rear-guards to frontline shock-troops.
 * Stuck Items: The crossbow is always in the first spell slot.
 * Self Destructive Charge: The orcs are part of one long one.
 * Shout Out: At the end of a wave, the Apprentice may invoke Charlie Sheen's "Winning!" line.
 * Smash Mook: The Ogres can take a lot of punishment, and also cause much more damage if they should reach your rift. They aren't affected by physics-based traps unless you upgrade them specifically to do so.
 * Spikes of Doom: One of your first traps.
 * Springs Springs Everywhere: Spring Traps. Though, these affect the enemies rather then you, and always launch them in a specific direction, which you set when first placing them.
 * Stripped to The Bone: The acid bombs from the DLC Alchemist's Satchel inflict this on enemies, as do the automatically-refilling vats of acid in the Lost Adventures DLC.
 * Tech Tree: The weavers act as version of this.
 * This Loser Is You: The game starts with The Apprentice's master dying by cracking his head open on a rift staircase. As he's dying he reflects on his awesome Orc slaughtering accomplishments and goes on to say hope is lost now that it's up to The Apprentice given his rather low opinion of him.
 * This Is Sparta:


 * The Usual Adversaries
 * Threat Backfire: The Sorceress to the Apprentice. Often.
 * Too Dumb to Fool: Other warmages might have fallen for the Sorceress's offers of power and companionship. Not the Apprentice.
 * Too Dumb to Live: The traps aren't exactly hidden or anything. The Orcs will blindly run into them anyway. Good for you.
 * Some of the comments the orcs make about the sorceress in their head suggests at least part of this is her forcing them onward.
 * Hilariously, the orcs often remind each to watch out for traps, and then proceed walking onto said traps themselves, along with the ones who were warned.
 * Vent Physics: Vent Traps launch enemies up in the air, opening them up to further attacks.
 * The Unfought:
 * The Very Definitely Final Dungeon: Through most of the campaign, the most enemy-access doors any fortress has is maybe three. The final fortess has eight. And a rolling log of doom for every single one.
 * Video Game Cruelty Potential: Hoooo boy...
 * Villainous Breakdown: When the Sorceress realizes that the Apprentice  she starts to really lose it.
 * War Has Never Been So Much Fun: The Apprentice has the time of his life fighting Orcs.
 * We Need a Distraction: Orcs will stop to attack bomb barrels, Decoy traps and guardians. Paladins are especially good at this, tanking groups of Orcs while you hit them with an Area of Effect attack. Kobolds will run right past them.
 * You Shall Not Pass: Pretty much the job of a warmage. The Apprentice enjoys it more than most.
 * You Shall Not Pass: Pretty much the job of a warmage. The Apprentice enjoys it more than most.