'''ESWAT''' refers to two [[ReformulatedGame drastically different]] games developed and released by Creator/{{Sega}}. Both are ''Franchise/RoboCop''-inspired action platformers where the player controls Duke Oda, a lowly cop who eventually gets to use a powerful suit of armour, fighting the crooks and sinister organizations that have taken over Liberty city.

''ESWAT: Cyber Police'' is the original version, released in 1989 for the arcades. It is tactical action platformer in the vein of ''VideoGame/RollingThunder'' and ''VideoGame/{{Shinobi}}'', featuring a similar focus on careful positioning and managing your limited ammo. It was later ported to the UsefulNotes/SegaMasterSystem and several western computer platforms.

The second game, ''ESWAT: City Under Siege'' was released in 1990 for the UsefulNotes/SegaGenesis. Though also an action platformer, the game features vastly different level design, enemies and play mechanics. Whereas getting the ESWAT suit in the original didn't change much beyond giving you a machine gun and the ability to use ammo-limited special weapons, the suit here has a {{Jetpack}} and a full arsenal of switchable weapons, both of which need to be used in conjunction to clear the levels. Unlike the arcade version, it wasn't ported to any contemporary system, though it was included in a CompilationRerelease.

[[NamesTheSame Despite the title]], it has nothing to do with the "E-SWAT" team from ''Manga/{{Appleseed}}''.

!!Tropes that apply to both games

* DegradedBoss:
** In both versions, the cyborg twins reappear as weaker midbosses near the end of the game.
** In a series-wide example, the hovercraft pilots are a pair of (rather weak) stage bosses in ''Cyber Police''. In ''City Under Siege'', they become generic enemies in one level.
* DenialOfDiagonalAttack
* DualBoss: The cyborg twins.
* SecondHourSuperPower: After a certain point in both games (catching the three bank robbers in ''Cyber Police'' and beating the twin cyborgs in ''City Under Siege''), Duke is promoted to chief rank and gain clearance to the ESWAT armour.
* ReformulatedGame: Both games have entirely different level designs and visual design, with ''City Under Siege'' being noticeably futuristic than the original. The UsefulNotes/SegaMasterSystem version also has different level design, though it doesn't stray as much from the arcade version as ''City Under Siege'' does.

!!Tropes exclusive to ''Cyber Police''

* CarFu: One of the bosses is a truck that occasionally charges at you.
* ClothingDamage: The ESWAT armor gets visibly damaged every time you get hit.
* YellowPeril: Rat Lee.

!!Tropes exclusive to ''City Under Siege''

* MirrorBoss: The final boss is an EvilKnockoff of the ESWAT suit, which possesses most of your abilities.
* PowerupLetdown: Getting the Swat armor actually makes the game harder more than it helps you, since your hitbox is now too big to avoid shots by crouching, and you can't really shot bullets out of the air like you could before.
* PropRecycling: The police car sprite in the ending is taken from the first ''VideoGame/StreetsOfRage''