Many video games, particularly [[StealthBasedGame stealth games]] and {{First Person Shooter}}s (oftentimes in multiplayer maps), feature levels that require the player to navigate the inside of a ship. From a game design perspective, there are good reasons why a level taking place in a ship is convenient, some of which overlap with the reasons why it might be fun to play hide-and-seek on a ship:

* Ships are generally surrounded by water (unless they're in drydock), giving the level convenient boundaries, eliminating the need for arbitrarily-placed {{Invisible Wall}}s and the like by having an endless ocean surrounding the ship, which is more convincing.
* Below deck, ships have narrow corridors and sneaking through a well-lit corridor is quite a challenge.
* The corridors also facilitate linear level design very well due to being, well, [[NoSidepathsNoExplorationNoFreedom corridors]].
* A ship far out at sea is surrounded by water, which can be used to make the game world seem very large (with less effort than creating an epically-sized game landscape, for example). Additionally, having gameplay take place on a large ship that is steadily moving through water can convey that great distances are being covered, which can give the feeling of progressing through an epic journey.
* Ships can be sunk! This can make for convenient plot excuses to have the level take place on a ship (either sinking or saving a ship from sinking), thus taking advantage of all of the aforementioned aspects of ships. However, it is hard for an individual video game protagonist or even a team to sink a ship and the lengths that must be taken to do this can also prove convenient from a game design perspective (for example, as in ''VideoGame/DeusEx'', the player might have to plant explosives at specific points to sink a ship, necessitating that the player navigates through the ship and also forcing the player to leave the ship afterwards). This can also make for a transition into an [[UnderTheSea underwater level]] or something similar if it is not possible to leave the ship before it sinks.

A specific subtrope of this is GangplankGalleon. Related to DownTheDrain in that a sewer level and a ship level can share some qualities, such as maze-like design and aesthetic similarities. It does not necessarily coincide with GetOnTheBoat. Contrast BattleshipRaid, which takes a similar idea in a different direction.
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!Examples:

!!Stealth Games:
* In the ''Franchise/MetalGear'' series:
** ''VideoGame/MetalGearSolid2'' begins with a prologue taking place on a fake oil tanker that is actually transporting carrying Metal Gear Ray. Solid Snake must sneak below deck to find proof that US Marines have been constructing a Metal Gear.
** And later in the game, [[spoiler:Arsenal Gear]]. [[MindScrew We think]].
** The finale of ''VideoGame/MetalGearSolid4'' requires Snake to fight his way through a battleship, [[spoiler:namely Outer Haven, from where Ocelot plans to destroy the Patriots, [[GambitRoulette by letting you do whatever it is you're doing]].]]
* In the ''Tom Clancy's SplinterCell'' series:
** The second level of ''Chaos Theory'' takes place on a small ship called the ''Maria Narcissa''. The level is very linear and the player must use ventilation shafts and the like to avoid being detected in the narrow corridors and to find and assassinate Hugo Lacerda.
** In ''Double Agent'', one of Sam Fisher's missions is to infiltrate a cruise ship and blow it up with a bomb.
* ''AlphaProtocol'' has a mission set on a yacht.
* Part of an early mission in ''VideoGame/ThiefDeadlyShadows'' involves sneaking through the zombie infested wreck of a ship near the docks to retrieve the captain's diary.

!!First Person Shooters:
* From the ''CallOfDuty'' series:
** The first game had a level where the player must infiltrate the German battleship ''Tirpitz.'' The map is also used in the multiplayer.
** The first mission of ''ModernWarfare'', "Crew Expendable", is a raid on a cargo ship. The multiplayer map "Wet Work" is based on that level.
* From ''VideoGame/UnrealTournament'' and its sequels:
** A map in ''VideoGame/UnrealTournament'', "DM-[=KGalleon=]" (Koos Galleon), is modeled after a ship, as is its continuation in ''VideoGame/UnrealTournamentIII'', "DM-[=KBarge=]."
** Also from the first ''VideoGame/UnrealTournament'', the Assault map, "AS-Frigate," is about infiltrating the eponymous frigate and taking control of it.
* The E3 demo of ''VideoGame/{{Half-Life 2}}'' took place on an abandoned icebreaker called the ''Borealis''. The level didn't make it into the final release though ''Episode 2'' makes clear that ''Episode 3'' will feature the ''Borealis''. [[http://www.moddb.com/mods/missing-information This mod, Missing Information,]] recreates the level from the concept art and makes it playable.
* ''VideoGame/{{Cryostasis}}'' takes place entirely on a shipwrecked icebreaker called the ''North Wind.''
* One of the levels in episode 4 of ''VideoGame/DukeNukem 3D'' is set in an oil ship.
* A level of ''VideoGame/CallOfCthulhuDarkCornersOfTheEarth'' takes place on a Coast Guard cutter.
* ''VideoGame/CommandAndConquerRenegade'' features a Nod ship whose commanding officers are {{Shout Out}}s to ''TheLoveBoat'' and ''GilligansIsland''.
* [[VideoGame/BattlefieldBadCompany Battlefield: Bad Company 2]] should be listed here, although the level is in a cargo airplane, it's huge enough to practically be a ship, plus serves all the purposes listed in the trope description.
* The ''Franchise/{{Halo}}'' series is ''made'' of this trope.
** ''VideoGame/HaloCombatEvolved'' kicks it off with four explicit ship levels, first evacuating the Pillar of Autumn (1) as it prepares to crash into Halo. Then, the assault on the Truth and Reconciliation (3) in Halo's atmosphere, assault the Truth and Reconciliation ''again'' (9 )[[spoiler: to get Keyes's activation codes]], and finally the return to the "beached" Pillar of Autumn (10) [[spoiler: to blow it up and destroy Halo]]. Substitute space for water and they hit just about the whole checklist ''in the first game''. Four of the ten missions in the game spend substantial time on a ship. Most of the indoor parts of Halo feel like this, and for very loose interpretations of "ship" (for the sake of this trope space stations are admirable "ships"), practically the whole game could be considered this.
** In ''VideoGame/{{Halo 2}}'' you don't fight in any ships ''per se'', but Cairo Station, the Forerunner Gas Mining Facility, High Charity, and [[spoiler: Delta Halo]] all have that feel. The Scarab feels like one too, though it's a walker and not even technically a ship.
** In ''VideoGame/{{Halo 3}}'', when you return to [[spoiler: High Charity]], it feels like this (again, loose definition of "ship").
** In ''VideoGame/Halo3ODST'', your team is planning on this, (leading your squad's marksman to complain that he saw no use in carrying his ''sniper rifle'') but the Slipspace Jump that Regret pulled back in Halo 2 upsets that. The rest of the game is spent [[spoiler: fighting your way to your teammates in the wake of the explosion from the Jump]].
*** Pretty clear that Dare was going to commandeer the squad anyway, so maybe Buck just wasn't telling him?
** ''VideoGame/HaloWars'': see below
** In ''VideoGame/HaloReach'', you attack, maim, board, and commandeer the Ardent Prayer as part of Operation: Upper Cut. You use it to destroy the supercarrier Long Night of Solace.
* ''VideoGame/{{Golden|Eye1997}}eye'' has the Frigate level.
* Early in the PC version of ''FarCry'', the player has to fight their way through the wreck of a Japanese World War II aircraft carrier. With [[ThatOneLevel an army of mercenaries and a helicopter on the deck]].

!![=RPGs=] and other games:
* ''VideoGame/PokemonRedAndBlue'' (and ''Yellow'') feature the S.S. Anne. Other Pokémon games have the player go on ships, but usually there is not as much to explore as in the S.S. Anne. The ship returns in Heartgold and Soulsilver, the ''VideoGame/PokemonGoldAndSilver'' remakes. ''VideoGame/PokemonBlackAndWhite'' has the Royal Unova, which is rather large as well.
** ''VideoGame/PokemonRubyAndSapphire'' and Emerald have the Abandoned Ship and ''SS Tidal''.
** Then there's a more action packed one in ''VideoGame/PokemonBlack2AndWhite2'', the Team Plasma Frigate, where several boss battles will take place.
** ''VideoGame/PokemonXDGaleOfDarkness'' has the SS Libra, which is wrecked in the middle of the desert. There are only a couple trainers/Cipher Peons aside from the old guy who's living on the ship, but you have to navigate a bunch of levels with crates and look for a missing Bonsly. The trouble is at the end, where you'll get knocked out and your Snag Machine stolen.
* Two sidequests in ''[[VideoGame/TheElderScrollsIVOblivion Oblivion]]'' take place in ships, one where a ship which is used as a hotel is hijacked by a gang of bandits and another where the player must retrieve an NPC's family heirlooms from a haunted ship.
* ''VideoGame/DevilMayCry 1'' has mission 12 take place on a ghost ship. On it, Dante is attacked by Griffon for the second time.
* You make your way through a GhostShip early on in the first ''VideoGame/{{Grandia}}''.
* ''VideoGame/{{Dubloon}}'' begins with Russel raiding Navi's ship in search of the Golden Chest.
* In ''EternalSonata'', you go from Prince Crescendo's ship to the pirate ship ''Dolce'', where you fight a bunch of pirates, and eventually, the captain and her lieutenants.
* In ''[[VideoGame/MarioAndLuigiSuperstarSaga Mario & Luigi: Superstar Saga]]'', you board a ship with a literal skeleton crew in search of a piece of the Beanstar.
* ''VideoGame/FinalFantasyV'' has you traverse the Steam ship's lower decks to reach the Fire Crystal.
* ''VideoGame/MarioKart Double Dash'' has a cruise ship as one of the tracks.
* Stage 4 in ''VideoGame/{{Bonk}}'s Revenge'' takes place mostly on a cruise ship.
* Some of the levels from ''VideoGame/SuperMarioBros3'' and ''VideoGame/SuperMarioGalaxy''.
* Chapter 6 of ''VideoGame/ResidentEvil5'' takes place on a freighter ship.
** The entirety of ''VideoGame/ResidentEvilGaiden''.
** Jill's half of ''VideoGame/ResidentEvilRevelations'' takes place on a cruise ship.
* ''VideoGame/ChronoTrigger'' has you abroad an airship where your weapons are taken away. Depending on if the character Ayla is in your party will determine how you can get around. If you do not have Ayla you have to get around by stealth but with Ayla you can fight your way out, without weapons.
* ''VideoGame/TheLegendOfZeldaSkywardSword'': The Sandship [[spoiler:that protects Nayru's Flame]] is this and a Ghost Ship, though not simultaneously. The 'ghost ship' parts involve the fact that several bits of the ship are smothered in quicksand, It regresses into a standard ShipLevel when the Timeshift Stone is tripped - complete with Technoblin crew.
** Though all of ''PhantomHourglass'' and ''[[VideoGame/TheLegendOfZeldaTheWindWaker Wind Waker]]'' is a WaterWorld there is only one true ship level, the GhostShip dungeon in ''PhantomHourglass''.
* ''VideoGame/SecretOfMana'' has a flying desert ship, in which the heroes get split up.
* ''VideoGame/{{Uncharted}} 3'' has one set aboard a luxury liner commandeered by pirates.
* ''VideoGame/HaloWars'' has you fighting on top of your command ship, because slipstream is for sissies who aren't Spartans.
* One task force in ''VideoGame/CityOfHeroes'' has the characters assisting the US Navy in fighting off an extra-dimensional invasion. A good part of the first mission takes place on board a squadron of Destroyers (fighting Giant Robots on top of the ships and clearing out teleporting invaders inside).
* ''VideoGame/EndlessOcean'' has a sunken ship level. Its location moves between three spots in the game and is entered through a floating ghost ship. You can spend much longer than you'd think swimming around in it, because it's the only place certain marine species and game treasures can be found. Fortunately, the sharks swimming around the top of the ship won't hurt you, though the occasionally appearing huge great white will act displeased if you attempt to pet it. The only thing you have to watch is your air, to avoid being automatically brought back to the surface.
** The sequel makes it a bit harder. The sharks ''will'' try to attack you, and require you to whip out the pulsar gun to calm them. When they smack you, your air supply goes down a bit. And the biggest shark, Thanatos, is nearly impossible to do anything with, gun or no gun.
* "Das Boat" in ''[[VideoGame/MontyMole Monty on the Run]]''.
* Late in ''VideoGame/DeusEx'', the player must destroy a Chinese Supertanker hidden in a New York naval base by scuttling the weld points in its hull with explosives.
* Huge Crisis Zone in ''VideoGame/{{Sonic Rush|Series}}''.
** As well as Haunted Ship Zone in ''Sonic Rush Adventure''.
* "Titanic" on the ''GliderPRO'' CD.
* Stage 4 (Pirate Ship) in ''VideoGame/MoonCrystal''.
* In ''VideoGame/AnUntitledStory'', the path to the boss of [[UnderTheSea DeepDive]] leads through the wreckage of a ship clearly labeled as SS ''Eternity''. There's also a wreckage of another wooden ship on the other side of the area which cannot be explored, but has a bunch of collectibles underside, including quite appropriately a treasure chest.
* ''VideoGame/DonkeyKongCountryTropicalFreeze'' features levels with the wreckage of several freighter-style ships mixed into JungleJapes and PalmtreePanic settings. Most previous ''VideoGame/DonkeyKongCountry'' games featured the GangplankGalleon variant.
* ''VideoGame/XCom: Terror From the Deep'' had 2-part Terror Missions set on cruise ships: One part on deck, and the second part clearing out cabins, engine room, holds, etc. down below.
* ''VideoGame/ArmoredCore 3'' has one mission where the player must pilot a mech into a sinking ship to retrieve valuable cargo and escape before it finally goes under.
* The first two ''VideoGame/WarioLand'' games both have the SS Teacup. In ''2'' you can actually sink the Teacup, causing an alternative story path.
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