There is even controller support, albeit not very good controller support. We imagine improvements are still coming to the game. It runs for $4.49 with no in-app purchases or ads. Implosion is a hack-and-slash game from Rayark. That's odd because Rayark usually only does rhythm games. In any case, this one is pretty good. It's another post-apocalyptic setting.
The game takes place 20 years after humanity's downfall. It features decent mechanics, excellent graphics, an RPG style progression system, and plenty of content. The free version comes with the first six or so missions. There is a single purchase price for the rest of the game. This is an excellent option for those looking to avoid freemium games.
Nonstop Chuck Norris and Nonstop Knight are two very excellent beat 'em up games. They're also both basically the same game. You start the game, beat up a bunch of bad guys, level up, and try to keep that going for as long as possible. The game includes boss fights, tons of enemies, gear, and more. The Chuck Norris version also comes with a selection of handy Chuck Norris facts. Both games are freemium titles as well. However, unlike most, these don't require an Internet connection to play.
They're offline friendly.