Mouse in the Maze © 1959 MIT [Massachusetts Institute of Technology].
Mouse in the Maze is played with the light pen. The player can create a maze by removing line segments on a 8x8 grid and place pieces of cheese on the tiles. When ready a virtual mouse will be set free and will scurry around the maze in search of the cheese. The mouse would run out of energy when searching for the cheese but remember the paths it had taken for future attempts and become more proficient. A later update changed the cheese for Martini glasses and made the mouse swagger the more it drank.
The game was developed during the fall of 1958 when students were given a chance to programm on the TX-0 computer.
Next to Mouse in the Maze (initially just called Mouse) there were 2 other meaningful achivements.
One, called HAX, would generate an ever-changing array of shapes to show off the capabilities of the TX-0’s CRT. Another was a Tic-Tac-Toe game — played against the computer by typing commands using the flexowriter — designed to show off the computer’s interactivity. In a later version the game could also be played with the light pen.