Tegwar

From Wiki Gonzalez

The Exciting Game Without Any Rules. See Mark Harris's novels (http://www.uta.edu/english/tim/baseball/adult/hball.html#bang).

So similar to Calvinball?

(if so, it would be inferior, since nothing is superior to Calvinball)

(If nothing is superior to Calvinball, then Tegwar's resemblance or lack thereof to Calvinball is a strawman).

Tegwar is only one letter off from the title of a book (or was it a series of books?) by William Shatner.