Choose Your Own Adventure was a series of 184 wildly popular books that presented readers with a branching storyline. At the end of every page or so, the reader was presented with a choice. Depending on the choices you made, you were told to go to other pages where the story continued (or your character died, whatever). Books were published from 1979-1998, and all of the books are now out of print (but they shouldn't be hard to obtain online). The books ranged from science fiction to car racing to mystery - the scope of the series was truly astonishing.
The books were translated into many other languages as well: Catalan, Danish, Dutch, French, German, Italian, Portugese, Spanish, Turkish, and Urdu. As owlman mentioned above, there was indeed an Apple II series based on the books. In addition, there was also a Choose Your Own Star Wars Adventure series (its publishing stopped months after the rest of the series).
Choose Your Own Advenutre Book List (English only)
001. The Cave of Time
002. Journey Under the Sea
003. By Balloon to the Sahara
004. Space and Beyond
005. The Mystery of Chimney Rock
006. Your Code Name is Jonah
007. The Third Planet from Altair
008. Deadwood City
009. Who Killed Harlowe Thrombey?
010. The Lost Jewels of Nabooti
011. Mystery of the Maya
012. Inside UFO 54-40
013. The Abominable Snowman
014. The Forbidden Castle
015. House of Danger
016. Survival at Sea
017. The Race Forever
018. Underground Kingdom
019. Secret of the Pyramids
020. Escape
021. Hyperspace
022. Space Patrol
023. The Lost Tribe
024. Lost on the Amazon
025. Prisoner of the Ant People
026. The Phantom Submarine
027. The Horror of High Ridge
028. Mountain Survival
029. Trouble on Planet Earth
030. The Curse of Batterslea Hall
031. Vampire Express
032. Treasure Diver
033. The Dragons' Den
034. The Mystery of Highland Crest
035. Journey to Stonehenge
036. The Secret Treasure of Tibet
037. War with the Evil Puppet Master
038. Sabotage
039. Supercomputer
040. The Throne of Zeus
041. Search for the Mountain Gorillas
042. The Mystery of Echo Lodge
043. Grand Canyon Odyssey
044. The Mystery of Ura Senke
045. You are a Shark
046. The Deadly Shadow
047. Outlaws of Sherwood Forest
048. Spy for George Washington
049. Danger at Anchor Mine
050. Return to the Cave of Time
051. The Magic of the Unicorn
052. Ghost Hunter
053. The Case of the Silk King
054. Forest of Fear
055. The Trumpet of Terror
056. The Enchanted Kingdom
057. The Antimatter Formula
058. Statue of Liberty Adventure
059. Terror Island
060. Vanished!
061. Beyond Escape!
062. Sugarcane Island
063. Mystery of the Secret Room
064. Volcano!
065. The Mardi Gras Mystery
066. Secret of the Ninja
067. Seaside Mystery
068. Secret of the Sun God
069. Rock and Roll Mystery
070. Invaders of the Planet Earth
071. Space Vampire
072. The Brilliant Dr. Wogan
073. Beyond the Great Wall
074. Longhorn Territory
075. Planet of the Dragons
076. The Mona Lisa is Missing!
077. The First Olympic
078. Return to Atlantis
079. Mystery of the Sacred Stone
080. The Perfect Planet
081. Terror in Australia
082. Hurricane!
083. Track of the Bear
084. You are a Monster
085. Inca Gold
086. Knights of the Round Table
087. Exiled to Earth
088. Master of Kung Fu
089. South Pole Sabotage
090. Mutiny in Space
091. You are a Superstar
092. Return of the Ninja
093. Captive!
094. Blood on the Handle
095. You are a Genius
096. Stock Car Champion
097. Through the Black Hole
098. You are a Millionaire
099. Revenge of the Russian Ghost
100. The Worst Day of your Life
101. Alien, Go Home!
102. Master of Tae Kwon Do
103. Grave Robbers
104. The Cobra Connection
105. The Treasure of the Onyx Dragon
106. Hijacked!
107. Fight for Freedom
108. Master of Karate
109. Chinese Dragons
110. Invaders from Within
111. Smoke Jumper
112. Skateboard Champion
113. The Lost Ninja
114. Daredevil Park
115. The Island of Time
116. Kidnapped!
117. The Search for Aladdin's Lamp
118. Vampire Invaders
119. The Terrorist Trap
120. Ghost Train
121. Behind the Wheel
122. Magic Master
123. Silver Wings
124. Superbike
125. Outlaw Gulch
126. Master of Martial Arts
127. Showdown
128. Viking Raiders
129. Earthquake!
130. You are Microscopic
131. Surf Monkeys
132. The Luckiest Day of Your Life
133. The Forgotten Planet
134. Secret of the Dolphins
135. Playoff Champion
136. Roller Star
137. Scene of the Crime
138. Dinosaur Island
139. Motocross Mania
140. Horror House
141. The Secret of Mystery Hill
142. The Reality Machine
143. Project UFO
144. Comet Crash
145. Everest Adventure!
146. Soccer Star
147. The Antimatter Universe
148. Master of Judo
149. Search the Amazon!
150. Who Are You?
151. Gunfire at Gettysburg
152. War With the Mutant Spider Ants
153. Last Run
154. Cyberspace Warrior
155. Ninja Cyborg
156. You Are an Alien
157. U.N. Adventure
158. Sky-Jam!
159. Tattoo of Death
160. The Computer Takeover
161. Possessed!
162. Typhoon!
163. Shadow of the Swastika
164. Fright Night
165. Snowboard Racer
166. Master of Aikido
167. Moon Quest
168. Hostage!
169. Terror on the Titanic
170. Greed, Guns, and Gold
171. Death in the Dorm
172. Mountain Biker
173. The Gold Medal Secret
174. The Power Dome
175. The Underground Railroad
176. Master of Kendo
177. Killer Virus
178. River of No Return
179. Ninja Avenger
180. Stampede!
181. Fire On Ice
182. Fugitive
183. Cyberhacker
184. Mayday