When Duke Nukem 3D burst onto the Android Market back in November, fans of classic shoot-em-up gameplay couldn't be happier. At least until they actually installed the game, and learned that you had to buy parts two and three separately, instantly turning a 99¢ game into a $2.99 one. Three bucks isn't unreasonable for an Android game, but for a title that's over fifteen years old, many users found the roundabout payment model a little sketchy. The fact that it also displayed ads (later removed) offended the sensibilities of the Android crowd, who are happy to either pay or deal with ads, but not both.