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
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.
Civiballs
December 31, 1998When you cut the chain, how will the ball swing? Get the colored balls into their matching buckets... But, you'll need to do some planning!
Castle Defense
December 31, 1998You must defend the castle by shooting the oncoming enemy before they reach the end of the road. You earn money to buy more weapons.
Fractone
December 31, 1998Click on the fraction squares to make pairs that have a sum of 1... and do it as fast as you can!
Knight Switch
December 31, 1998A classic logic game. You have four knights on a small board and just have to switch the position of the two colors. Can you do it in as few moves as possible?
Whack a Difference
December 31, 1998This is like those "Whack a Mole" games, but you whack the thing that's different. Just like hitting your TV screen while watching Sesame Street!
Building Blocks
December 31, 1998This one isn't quite as easy as it looks. You just have to put the puzzle pieces together... But, sometimes, they don't end up fitting the way you think they should.
Rotate and Roll
December 31, 1998You're going to love this one! When I found it, I played it for a week until my eyes were blurry. Very simple - just tip the game to help the little guys escape.