SEGA just released ESWAT: City Under Siege for iOS and Android under SEGA Forever.
Enhanced Special Weapons and Tactics originally released in 1990 on the Genesis. The SEGA Forever release sees the usual enhancements like leaderboards, controller support, and more added. This release is f2p but a one time in app purchase of £1.99 will remove ads forever.
Source: God is Geek