
STP: You'll likely recognize Backflip Studios from their successful Ragdoll Blaster and Paper Toss franchises. Backflip recently decided to go the freemium route (with the option to remove ads for a price) and has announced five games set to launch within the next few months that utilize this model.

Backflip Studio's latest IOS/Android release is set to drop next week.
Backflip Studios, makers of ‘DragonVale’ (Top grossing iPad app of 2012) and ‘NinJump’, have announced their latest free-to-play title called ‘Dwarven Den’.
‘Dwarven Den’ combines mining, puzzle, and exploration within a Dungeon Keeper-like environment. Here, you will play as a jolly dwarf, exploring the underground mines and digging through ancient civilizations. Within the underground levels, you must solve various puzzles and complete objectives in order to find an errant dwarf or gather the lost treasures.

Quality index examines the best futuristic iPhone strategy games.