Plenty of great word or number games only cost a couple of bucks to buy or remove ads on forever and have no other IAPs. Half of my family is obsessed with Wordsmyth at the moment. Most mobile action games are stuffed with dark patterns these days, but there are plenty of great ports with only one-time charges. Rockstar's ported Max Payne and most of their great PS2-era games: GTA III, Vice City, San Andreas, Bully, Max Payne, etc.
