Zendoku allows for mathematical trash-talk of the highest order. Eat our logic and taste our deductive reasoning. How’d you like them rational apples? It’s as vicious as number grids get.
It’s a two player race for Sudoku grid completion and for every 3x3 box, row or column you fill, your opponent is sent a screen-filling stylus-using or mic-blowing distraction - earning you precious extra seconds. Some are easy - tapping away paper tiles - but faced with chiseling away 30 minuscule stone blocks or tapping away a flurry of incoming cartoon fists, you soon enter into the swearing zone as your not-getting-any-fuller grid goads at you from behind the distraction. It’s malicious, delightful fun.