if you like throwing little birds into wood, stone, or ice and hitting green pigs with them, Angry Birds (i think the original one still costs money to buy, not sure)
if you like having a 3d 8bit chicken get hit by 3d 8bit vehicles or get snatched by an 3d 8bit hawk or drown in 3d 8bit water then Crossy Road (free)
if you like running from a giant monster thing then Temple Run (free, i think)
if you like running from a policeman and his dog while running through subways and running on trains and grabbin' coins then Subway Surfers (free)
if you need a calculator, Calculator (forgot rest, probably + or Pro, also it's free)
if you want some feed, there's the Facebook App or Twitter App (all free)
these are just some, mostly games
