An adventure is an exciting experience or undertaking that is typically bold, sometimes risky.  Adventures may be activities with danger such as traveling, exploring, skydiving, mountain climbing, scuba diving, river rafting, or other extreme sports. Adventures are often undertaken to create psychological arousal or in order to achieve a greater goal, such as the pursuit of knowledge that can only be obtained by such activities.
Adventurous experiences create psychological arousal,  which can be interpreted as negative (e.g. fear) or positive (e.g. flow). For some people, adventure becomes a major pursuit in and of itself. According to adventurer André Malraux, in his Man's Fate (1933), "If a man is not ready to risk his life, where is his dignity?".
Similarly, Helen Keller stated that "Life is either a daring adventure or nothing." 
Outdoor adventurous activities are typically undertaken for the purposes of recreation or excitement: examples are adventure racing and adventure tourism. Adventurous activities can also lead to gains in knowledge, such as those undertaken by explorers and pioneers – the British adventurer Jason Lewis, for example, uses adventures to draw global sustainability lessons from living within finite environmental constraints on expeditions to share with schoolchildren. Adventure education intentionally uses challenging experiences for learning.
Author Jon Levy suggests that an experience should meet several criteria to be considered an adventure: 
Some of the oldest and most widespread stories in the world are stories of adventure, such as Homer's Odyssey .   
The knight errant was the form the "adventure seeker" character took in the Late Middle Ages.
Adventure fiction exhibits these "protagonist on adventurous journey" characteristics, as do many popular feature films, such as Star Wars  and Raiders of the Lost Ark . 
Adventure books may have the theme of the hero or main character going to face the wilderness or Mother Nature. Examples include books such as Hatchet or My Side of the Mountain . These books are less about "questing", such as in mythology or other adventure novels, but more about surviving on their own, living off the land, gaining new experiences, and becoming closer to the natural world.
Many adventures are based on the idea of a quest: the hero goes off in pursuit of a reward, whether it be a skill, prize, treasure, or perhaps the safety of a person. On the way, the hero must overcome various obstacles to obtain their reward.
In video game culture, an adventure game is a video game in which the player assumes the role of a protagonist in an interactive story driven by exploration and puzzle solving.  The genre's focus on story allows it to draw heavily from other narrative-based media, literature and film, encompassing a wide variety of literary genres. Many adventure games (text and graphic) are designed for a single player, since this emphasis on story and character makes multi-player design difficult. 
From ancient times, travelers and explorers have written about their adventures.  Journals which became best-sellers in their day were written, such as Marco Polo's journal The Travels of Marco Polo or Mark Twain's Roughing It . Others were personal journals, only later published, such as the journals of Meriwether Lewis and William Clark or Captain James Cook's journals. There are also books written by those not directly a part of the adventure in question, such as The Right Stuff by Tom Wolfe or books written by those participating in the adventure but in a format other than that of a journal, such as Conquistadors of the Useless by Lionel Terray. Documentaries often use the theme of adventure as well.
There are many sports classified as adventure sports, due to their inherent danger and excitement. Some of these include mountain climbing, skydiving, or other extreme sports.
Dr. Henry Walton "Indiana" Jones, Jr., also known simply as Indy, is the title character and protagonist of the Indiana Jones franchise. George Lucas created the character in homage to the action heroes of 1930s film serials. The character first appeared in the 1981 film Raiders of the Lost Ark, to be followed by Indiana Jones and the Temple of Doom in 1984, Indiana Jones and the Last Crusade in 1989, The Young Indiana Jones Chronicles from 1992 to 1996, Indiana Jones and the Kingdom of the Crystal Skull in 2008, and Indiana Jones and the Dial of Destiny in 2023. The character is also featured in novels, comics, video games, and other media. Jones is also the inspiration for several Disney theme park attractions, including Indiana Jones et le Temple du Péril, the Indiana Jones Adventure, and Epic Stunt Spectacular! attractions.
Quest for Glory is a series of hybrid adventure/role-playing video games, which were designed by Corey and Lori Ann Cole. The series was created in the Sierra Creative Interpreter, a toolset developed at Sierra specifically to assist with adventure game development. The series combines humor, puzzle elements, themes and characters borrowed from various legends, puns, and memorable characters, creating a 5-part series in the Sierra stable.
In Irish mythology, Mag Mell is one of the names for the Celtic Otherworld, a mythical realm achievable through death and/or glory. Unlike the underworld in some mythologies, Mag Mell was a pleasurable paradise, identified as either an island far to the west of Ireland or a kingdom beneath the ocean. However, Mag Mell was similar to the fields of Elysium in Greek mythology, and, like the fields of Elysium, was accessible only to a select few. Furthermore, Mag Mell, like the numerous other mystical islands said to be off the coast of Ireland, was never explicitly stated in any surviving mythological account to be an afterlife. Rather, it is usually portrayed as a paradise populated by deities, which is occasionally visited by some adventurous mortals. In its island guise it was visited by various Irish heroes and monks forming the basis of the Adventure Myth or "echtrae" as defined by Myles Dillon in his book Early Irish Literature. This otherworld is a place where sickness and death do not exist. It is a place of eternal youth and beauty. Here, music, strength, life and all pleasurable pursuits come together in a single place. Here happiness lasts forever, no one wants for food or drink. It is the Irish equivalent of the Greek Elysium or the Valhalla of the Norse.
Thriller is a genre of fiction, having numerous, often overlapping subgenres. Thrillers are characterized and defined by the moods they elicit, giving viewers heightened feelings of suspense, excitement, surprise, anticipation and anxiety. Successful examples of thrillers are the films of Alfred Hitchcock.
Riḥla refers to both a journey and the written account of that journey, or travelogue. It constitutes a genre of Arabic literature. Associated with the medieval Islamic notion of "travel in search of knowledge", the riḥla as a genre of medieval and early-modern Arabic literature usually describes a journey taken with the intent of performing the Hajj, but can include an itinerary that vastly exceeds that original route. The classical riḥla in medieval Arabic travel literature, like those written by Ibn Battuta and Ibn Jubayr, includes a description of the "personalities, places, governments, customs, and curiosities" experienced by traveler, and usually within the boundaries of the Muslim world. However, the term rihla can be applied to other Arabic travel narratives describing journeys taken for reasons other than pilgrimage; for instance the 19th century riḥlas of Muhammad as-Saffar and Rifa'a al-Tahtawi both follow conventions of the riḥla genre by recording not only the journey to France from Morocco and Egypt, respectively, but also their experiences and observations.
A video game genre is an informal classification of a video game based on how it is played rather than visual or narrative elements. This is independent of setting, unlike works of fiction that are expressed through other media, such as films or books. For example, a shooter game is still a shooter game, regardless of where or when it takes place. A specific game's genre is open to subjective interpretation. An individual game may belong to several genres at once.
A knight-errant is a figure of medieval chivalric romance literature. The adjective errant indicates how the knight-errant would wander the land in search of adventures to prove his chivalric virtues, either in knightly duels or in some other pursuit of courtly love.
Adventure travel is a type of niche tourism, involving exploration or travel with a certain degree of risk, and which may require special skills and physical exertion. In the United States, adventure tourism has grown in recent decades as tourists seek out-of-the-ordinary or "roads less traveled" vacations, but lack of a clear operational definition has hampered measurement of market size and growth. According to the U.S.-based Adventure Travel Trade Association, adventure travel may be any tourist activity that includes physical activity, a cultural exchange, and connection with nature.
The genre of travel literature encompasses outdoor literature, guide books, nature writing, and travel memoirs.
Alastair Humphreys is an English adventurer, author and motivational speaker. Over a four-year period he bicycled 46,000 miles (74,000 km) around the world. He was a National Geographic Adventurer of the Year in 2012. He is responsible for the rise of the idea of the microadventure – short, local, accessible adventures.
Quest for Glory: So You Want to Be a Hero is a 1989 adventure game/role-playing game hybrid, designed by Lori Ann Cole and published by Sierra On-Line for MS-DOS. It is the first game in the Quest for Glory series, and has been credited for being a genre-defining game, as it tried to mix graphical adventure gaming with role-playing-like elements such as statistic building that would actually affect the ability to accomplish certain parts of the game. The game has a satirical and silly tone. Ports for the Amiga, Atari ST, and NEC PC-9801 were released in the early 1990s. A VGA remake, titled Quest for Glory I: So You Want to Be a Hero, was released in 1992 for DOS and later in 1994 for Mac OS.
National Geographic Adventure was a magazine started in 1999 by the National Geographic Society in the United States. The first issue was published in Spring 1999. Regular publication of the magazine ended in December 2009, and the name was reused for a biannual newsstand publication. The last issue was December 2009/January 2010.
Kira Salak is an American writer, adventurer, and journalist known for her travels in Mali and Papua New Guinea. She has written two books of nonfiction and a book of fiction based on her travels and is a contributing editor at National Geographic magazine.
Sensation seeking is a personality trait defined by the search for experiences and feelings, that are "varied, novel, complex and intense", and by the readiness to "take physical, social, legal, and financial risks for the sake of such experiences." Risk is not an essential part of the trait, as many activities associated with it are not risky. However, risk may be ignored, tolerated, or minimized and may even be considered to add to the excitement of the activity. The concept was developed by Marvin Zuckerman of the University of Delaware. In order to assess this trait he created a personality test called the Sensation Seeking Scale. This test assesses individual differences in terms of sensory stimulation preferences. So there are people who prefer a strong stimulation and display a behavior that manifests a greater desire for sensations and there are those who prefer a low sensory stimulation. The scale is a questionnaire designed to measure how much stimulation a person requires and the extent to which they enjoy the excitement. Zuckerman hypothesized that people who are high sensation seekers require a lot of stimulation to reach their Optimal Level of Arousal. When the stimulation or sensory input is not met, the person finds the experience unpleasant.
The term microadventure was made common by British adventurer and author Alastair Humphreys and is defined as an overnight outdoor adventure that is "small and achievable, for normal people with real lives". The New York Times described microadventures as "short, perspective-shifting bursts of travel closer to home, inspiring followers to pitch a tent in nearby woods, explore their city by moonlight, or hold a family slumber party in the backyard."
Lines on a Map: Unparalleled Adventures in Modern Exploration is a book by Canadian author and adventurer Frank Wolf. It is his first book, published in October 2018 by Rocky Mountain Books.
Critical Role: Call of the Netherdeep is an adventure module with themes of heroism, underwater horror and fantasy. It is set in the Exandria campaign setting and designed for the 5th edition of the Dungeons & Dragons role-playing game. It was published by Wizards of the Coast and released on March 15, 2022.