Jonathan Keefer
Game Curator

Favorite Coolmath Games: Clicker Heroes, Block the Pig, Tube Master
Jon is a strategy game fanatic - his favorite games are open-ended puzzles with strategic, complex systems and creative solutions. He loves that games allow anyone to share in unique experiences, like designing a subway system in Mini Metro: London or building a civilization in Pre-Civilization Bronze Age. He has been helping discover and design games that make you think for Coolmath since 2014.
In his free time, Jon enjoys biking, playing board games, card games, Nintendo, Xbox and PC games. In past lives he has helped design board games and card games, including the Chaotic Trading Card Game and the Twilight movie (yes, that Twilight) board game series.
Jon is a graduate of NYU’s Stern School of Business and is deeply passionate about using games as a way to help people think, learn, and grow. His accomplishments in the web gaming space have given him opportunities to share his insights as a speaker and panelist at industry events such as GDC, Gamescom and Pocket Gamer Connects.
Games Reviewed By Jonathan Keefer
Pool Geometry
December 31, 1998The cool thing about this game of pool is that you get to see the geometry of the shots you're lining up! Plan your moves carefully and clear the table.
Number Balls
December 31, 1998This is a pretty simple game. You just click on the balls following the numbers on them from lowest to highest.
Duck Life
December 31, 1998Train your duck to get faster so he can win races and save the farm. Use math to help him succeed. Teach him how to swim and fly too.
Three Bags
December 31, 1998Either I just haven't figured this one out yet, or I'm missing something. There must be a logic trick here. Can you figure it out?
Fraction Splat
December 31, 1998Sounds easy... Just click on the right type of fraction and make it go "SPLAT. " The trick is catching them!
Tower of Hanoi
December 31, 1998Stack the disks in the proper order! Create colorful towers by stacking the disks from smallest to largest based on the color.
World's Hardest Game 2
December 31, 1998A great sequel to The World's Hardest Game... Now, there are two of them! I can barely get past the first level, but I've seen it done and it's possible. Good luck!
Lucky Clover
December 31, 1998Have you ever looked for four leaf clovers? Finding one is supposed to bring good luck. Can you find the ones hidden in this game?
Green Leprechauns
December 31, 1998You need to put leprechauns in the area to turn the entire area green. When you put a leprechaun in, it will turn all the blocks it can see green.
Field Separation
December 31, 1998I thought this one was boring - until I figured it out. Now, I think it's great. The trick is that the fields must be big squares or rectangles. Find a good place to start.