Algebra is one of my favorite hideouts in Cleveland because it is so unique. In terms of taste, ambiance, amount of boardgames, and funky furniture, there is just no comparison. Love their coconut almond chai tea and its the only place in Cleveland that I've encountered Turkish delight. Definitely a cool place to go if you are looking for something novel to try out.
There's also a hippy, zen, organic ambiance to the place. Even their bathrooms are labeled for "brothers" and "sisters".