PLATFORM ADVENTURE
The untold history of the Metroidvania subgenre.
Platform Adventure is a subgenre of Action Adventure and Platform games. In short, these are games that focus on platforming (or an equivalent movement focus), exploration, gradually making the player character better able to traverse the world that they're exploring by acquiring various upgrades, and (usually light) puzzle solving. They feature interconnected worlds with some degree of persistence, that are gated in content by permanent abilities or tools acquired by the player (as opposed to just keys, non tool/ability-based puzzles or combat) and which gradually open up more as the player overcomes their obstacles.
Generally, platform adventure games allow for some degree of non-linear progression while subtly guiding the player towards the next intended path. To some extent they also tend to feature a "loopback" structure, where players happens upon ability gates that they'll come back to later on with the required ability to progress. Historically they have been side-scrolling and in 2D but they can be top down view, third-person or first-person and in 3D as well.
The term possibly originated in the late '80s (C&VG review scan) as a way to describe the first Metroid and is a portmanteau of Platform(er) and Action Adventure, although similar terms like Arcade Adventure were also in use at the time, and other terms have been coined since.
If you're a zoomer or millennial then you may be more familiar with the term Metroidvania to describe these kinds of games, however that term seems to first have been used by a publication in this 2003 review of Aria of Sorrow and became commonly used around the mid-late '00s elsewhere. According to wikipedia, the first source is Scott Sharkey and he used it specifically to describe Castlevania games that played more like Metroid games, but the Gamespy review is obviously older (this Dawn of Sorrow review from 2005 by Jeremy Parish seems to feature the second use of the term in a published review).
Since then, the term's meaning has evolved to mean basically any game in the style of either the Metroid games, the Metroidvania-style Castlevania games, or both. When exactly this started happening "officially" I'm not sure, but this 2005 article about Cave Story calls it both a MV and a "side-scrolling Adventure-RPG". There are also a few Shadow Complex reviews from 2009 that call that game one.
If you have a look around, one site dedicated to the subgenre attributes the term to Jeremy Parish, and another one describes the subgenre as originating strictly from Japan. Personally, I've been using "Platform Adventure" since the '90s and prefer it to metroidvania for several reasons. It's more consistent with other genre names, it sounds better, and it doesn't bring specific games to mind which can cause some confusion and needless bickering about game X not including feature Y. It isn't contradictory to certain games in the subgenre which fans wouldn't see as part of it if their structure and mechanics were described to them (Metroid 2, Cave Story, Ori and the Blind Forest, Monster Boy, etc.). It is also a bit broader than the metroidvania term in that it includes games with a central hub structure or an overworld and dungeons structure.
Anyway, this site isn't about trying to replace one term with another, but rather an attempt to succinctly document the early history and evolution of this great and currently (early 2020s) quite popular subgenre, using a definition which is rooted first and foremost in game structure and mechanics that took shape back in the 1980s. Think of it as a quick reference guide to all of the notable older games in the subgenre, covering games from 2009 all the way back to 1984 (arguably the year of the first proper games in the subgenre), and going beyond the mainstream retro platforms like the NES, SNES, PS1 and PS2.
Below is a list of key features that I think almost everyone would agree with, along with a list of optional ones that I and others have picked up on, but which are more subtle, seem limited to fewer games and/or evolved later on in the genre's lifespan.
Defining features of Platform Adventure (aka Metroidvania) games:
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Platforming, traditionally in 2D. This is the main distinguishing trait when comparing these games to other Action Adventure and ARPG games, going by their traditional definitions (see for example Adventure, AD&D: Cloudy Mountain, Dragon Slayer 1, Hydlide 1-3, Zelda 1 & 3, Ys 1-2, Starflight 1-2, Metal Gear 1-2, Pirates!, Quest for Glory 1-4, Wibarm or Final Fantasy Adventure/Seiken Densetsu).
Now the platforming in Platform Adventure games is generally not on the level of "make this jump or you die", but that makes sense since it goes against the design of an exploration focused game anyway. Instead the platforming in these games is generally about skillful and fun movement, while also challenging you to maintain a certain flow. Going way back, I remember how mind-blowing it was when I first played Wonder Boy III, made it to the islands area and when I fell into the water there, I didn't die like in the first game - instead there was this whole additional area for me to explore!
Platforming is just a good way to make traversal more interesting, particularly in a side view game, which I think is why like 98% of games that check the other PA/MV boxes have at least some of it. And it ties into ability gating nicely with for example the speed booster in Metroid letting you run or jump (or air dash) through certain walls.
I'm also not super picky about what constitutes platforming; I would count Bionic Commando's swinging for example, but it should be more involved than holding forward while the game jumps between some platforms for you like in Zelda: Ocarina of Time.
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Exploration of an (preferably seamlessly) interconnected game world with some degree of persistence. Historically there have been various alternatives here like a town or multiple towns with gates leading to "dungeon" areas (sometimes removing the travel distances between the town(s) and dungeons), a distinction between an overworld and dungeons/boss areas (sometimes with different perspectives, see Zelda II), and a hub map system where travel between locations is removed. Series like Metroid differ a bit here in that the line between the overworld/hub area and the dungeons/boss areas is blurred, but they still tend to have some dungeon areas such as Tourian or the ghost ship. When it comes to persistency, the degree to which changes to the game world caused by the player are permanent can vary but in general a game should keep track of unlocked doors, collected tools/abilities and beaten bosses while letting consumables and regular enemies respawn when exiting a room or sub area.
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(Persistent) ability or tool-based progression, preferably in a way that creates new platforming puzzle challenges and with some backtracking to previously visited areas. In general, as the player gains more of these the game's world gradually opens up to them more and more. The best new abilities/tools can be used both for traversing the world, unlocking doors (whatever shape they may take) and/or for combat. I tend to refer to this as ability gating when talking about various games on the site.
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Partial or full non-linearity in the overarching structure of the game, preferably with subtle guiding of the player in the right direction. Partial can include games with branching paths between more linear areas, or optional exploration for upgrades or currency in an otherwise mostly linear game (this includes teases like a slightly too high platform or a locked door that you've passed by earlier) such as Cave Story. Most exploration should preferably be rewarding in a tangible way, with worthwhile rewards and challenges leading up to them, as well as a quick way to get back on the main path afterwards. When it comes to backtracking with gained abilities to progress, I prefer a loopback structure where you're led back to the ability gate via a new path, or using a new ability to backtrack through a previously visited path in a new way (also known as recontextualizing).
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RPG- and/or Action Adventure-style character building in the form of stat and/or gear upgrades. Can use an experience point-based leveling system, an action-based system (Dungeon Master or FF2 for example), a power up/gear-based one (with or without shops), or a combo. As a result, you also tend to see respawning enemies in these games.
Optional but often associated with the genre:
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Focus on environmental storytelling over narration and/or NPC interaction. A classic example would be the beginning of Super Metroid after landing on the planet and the way it introduces the enemies here.
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A sense of loneliness, vulnerability, and/or dread. This can be done by using a minimal amount of narration and NPC interaction (or an unpredictable/untrustworthy narrator and/or NPCs), tight resource management, stripping the player of certain abilities at key points (see for example Wonder Boy III), an unskilled/clumsy player avatar (though this one is more associated with survival horror games nowadays) and of course with the audiovisuals, enemies and aforementioned environmental storytelling.
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A focus on creating what could be a real place should take precedence over creating a set of abstract platforming challenges á la Mario.
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Sequence breaking - When you can go where you're "not supposed to go yet" with a tool or ability that isn't pointed out to you as being useful for that purpose. One example is bomb jumping in Metroid, where the main purpose of bombing is destroying certain walls but the knockback that occurs when near the blast can be used to ascend and reach new areas. Sequence breaking also includes abusing a glitch or seemingly unrelated mechanic (such as damage boosts or respawning after death) which wasn't actually intended by the developer to skip ahead in the game.
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Grinding and Collectathon elements - These are commonly associated with Metroidvanias in particular (as in the Platform Adventure/Metroid-style Castlevania games which the term originally described). The latter is common in for example the Dizzy series, and the style of 3D platformer popularized by Mario 64.
"Scott Sharkey, who had used the term to describe the games in the Castlevania series that had adopted some elements from the Metroid series.[15]" - Wikipedia -
One or more late game abilities or tools that make you feel powerful by greatly speeding up travel and/or combat with regular enemies. For example the screw attack and shinesparking in Super Metroid, or the downstab move in Zelda II.
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Bosses which trigger the next story event, reward you with an important ability/tool or unlock a new area when defeated.
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Save points or checkpoints. Platform Adventure-like games without these tend to either fall into the Rogue-like or Rogue-lite platformer subgenre and then also have some degree of randomized world generation, or be very short games (one example is Draconus for the C64).
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Teleporters or other means of quick travel. Some games change the way you backtrack through a previous segment instead, with new abilities, new enemies or changes in the level design that keep the experience fresh. Some games also let you open up shortcut paths to previously visited areas as an alternative or complement to backtracking and quick travel.
Ok that became a lot longer than I thought it would, but it's good to have these thoughts collected in one place. Just one last thing: In listing various features from these games that relate to the genre, some unique aspects are spoiled so if you want to go in blind, use the list format page and check video playthroughs or reviews instead. Now that we have that out of the way, please enjoy the rest of the site!