Grover's Number Rover is an educational game for children ages 3 to 6, featuring Grover of Sesame Street fame. There are 6 mini-games within the main program, each helping teach smaller numbers. Each mini-game has it's own instructions as well as two skill levels - in all cases, skill level 1 uses numbers from 1 to 6 only, while level 2 expands this to 1 to 10. Each game loops until the CLEAR key is pressed to go back to the main menu. The six mini games are:
Twiddle Windows: This game has Grover in a flying saucer style Rover, with a number of "Twiddles" standing on the ground below. Grover has opened up the same number of windows to let the Twiddles on board. The player taps the up arrow key to move a Twiddle into an open window. Once all the Twiddles are aboard, the player hits the ENTER key, and then there is sound and animation if the player got the exact amount of Twiddles aboard.
Twiddle Counting: In this game, the player has to hit the number key corresponding to the number of Twiddles on the screen, then press ENTER. If they get the correct number, the Twiddles are all transported to the rover.
Twiddle Adding: In this game, the player has to do simple adding by either hitting the right arrow to bring enough Twiddles onto the screen to match the add formula, or they can punch the number sum directly. In both cases, they hit ENTER when they think they have the right number of Twiddles on the screen. If the player has an incorrect answer, the Twiddles run off the screen and the player tries again.
Twiddle Away: This game is basically the same as Twiddle Adding, except it uses simple subtraction instead (and the arrow key method has the player using the down arrow to move Twiddles off the screen.
Twiddle Play: In this game, the player basically gets to fool around using the arrow keys which each do different actions:
Right Arrow - bring a Twiddle onto the screen
Left Arrow - scoot a Twiddle off the screen
Up Arrow - zip a Twiddle into the rover
Down Arrow - drop a Twiddle onto the ground from the rover
Title: Grover's Number Rover
Author: Lee Chapel
Publisher: Children's Computer Workshop
Released: August 1983
Requires: Color Computer 1, 2 or 3, 16K RAM.