Big's Fishing Derby

Big's Fishing Derby is a total-conversion modification of Sonic the Hedgehog 2, based on Big's Fishing mini game in Sonic Adventure, the same premise applies. Big must catch froggy to obtain the emerald he swallowed, Dr. Robotnik also is fishing for froggy to obtain all the Chaos emeralds! Big must protect froggy and keep the emeralds out of Robotnik's hands!

Froggy has lept into a warp ring and managed to collect all the chaos emeralds! Dr. Robotnik's aquatic roboticizer due to their energy is activated. Robotnik getting the readings realizes the emeralds are near by and decides to take a fishing trip to gather them. Big fishes to get his pet frog back, but upon seeing Robotnik knows he's up to something, and figures froggy has something he wants so Big decides to keep whatever it is out of Robotnik's hands.