Chip 'n Dale Rescue Rangers 2 (Basketball Hack) is a ROM hack of the game, modifying it to incorporate basketball-themed elements. This suggests an unofficial modification, likely created by a member of the ROM hacking community to alter aspects of the original game's content or mechanics. It is not an official release from Capcom or any other licensed entity.

Chip 'n Dale Rescue Rangers 2 (Basketball Hack)

Chip 'n Dale Lomax Attacks v.1.2