Serendipity

Serendipity is a series of educational games for the Apple II.

• Alphabet Match Patch: Type the letter that appears on the screen.
• Number Match Patch: Type the number that appears on the screen/
• Number Counting Patch: Type the number that appears on the screen a specified number of times.
• Name that Color: Spell the color that appears on the screen.
• Sour Apple: A computerized version of Nim, where the player eats 1 - 3 apples each turn, with the player eating the last rotten apple is the loser.
• Math Invaders: The player tries to destroy the enemy's brown command center. They select a liftoff velocity, and if they hit a white defender, they must correctly answer a math question to continue on. The player gains points for every bounce of the spacecraft, answering a math question correctly, and destroying the enemy command center.
• Mystery Number: Try to guess a number. The player is told each guess whether their choice is too big or too small.
• Estimation baseball: Two players try to accurately guess math questions. The player has 5 seconds to answer as closely as possible. The player's hit is based upon how quickly and correctly they answer. There are multiple difficult levels.
• Mineshaft: The player tries to correctly guess a fraction to pick up the pick from a mineshaft.