|Publisher||Home Entertainment Suppliers Pty. Ltd. (Australia)|
|Date|| 1994 (according to the title screen)|
1993 (according to the ending)
|Engine||Super Boy 4|
Twin Mouse is a Master System platform game developed by Open Corp. in 1993-1994.
Twin Mouse is a platformer resembling Tiny Toon Adventures for the NES. The goal is simply to get to the end of each stage. The player character is a mouse that can switch between male and female when a hammer is picked up. The only difference between the two is that the female can slowly descend in mid-air, similar to Plucky Duck's ability. At the end of each level is a door that can only be opened with a key held by a boss. Jumping on its head three times will reveal the key. Throughout the levels are many collectibles; these include jewels, mushrooms, and strawberries, but they all function the same: collecting 100 will award the player an extra life.
- This game has only been sighted on the Australian Home Entertainment Suppliers Pty. Ltd. multicart 4 PAK All Action.