In March 2021, six of the Apple App Store’s top ten mobile games in the U.S. came from Turkish studios, including Basketball Arena, which asks players to steal the ball from opponents in head-to-head matches and go for slam dunks; the self-styled “super fun running game” Bounce Big, where players run around, collect items, improve the size of their backsides, and launch off pads (the winning player twerks at the end of each level); Deep Clean Inc. 3D, in which users scrub crusty iPhones and toilets; and Jelly Dye, in which players, well, inject dye into a jelly. And Istanbul has become a magnet for up-and-coming game developers.
Source: How Istanbul became the Silicon Valley of the mobile gaming industry