SpellTower asks users to create words by joining letters in any direction; the longer the word, the rarer the letter, the more points you get. Its simple premise is what makes the game incredibly addictive, especially for word-obsessed gamers like me.
There are four single-player modes, from least frantic (Tower Mode — no time limit) to most frantic (Rush Mode — it’s really fast), as well as a two-player multiplayer mode that pits two Android devices against one another.