The Land Before Time: Big Water Adventure is a platform game released in 2002 by TDK Mediactive. It is a single-player game based on the animated film from The Land Before Time series. After a heavy rain, Little Mo is stuck in the Great Valley and must now return to his family. With the help of friends Littlefoot, Ducky, Cera, Spike and Petrie, the player must help Mo get home.

The game consists of a series of short levels where the player runs through the levels jumping over gaps and collecting stars. Every few levels there are challenges waiting for the player, e.g. a race that must be successfully completed in order to move on. There is no "life" limit in this game. If the player falls into the abyss while jumping, he will be taken back to the point where he can continue the game.

The Land Before Time: Big Water Adventure is designed for children due to its low level of difficulty. Colorful graphics and ear-pleasing sound effects should appeal to young players.