Emulator Enhancer adds a number of features to supported emulators, including Arnold, Boycott Advance, fMSX, Generator, Genesis Plus, Horizon, Jum52, KiGB, MO5, Neopocott, O2Em, Oric, Oswan, RockNES, SMS Plus, TEO, Thom, TGEmu, and ViBE.
What's new in version 3.0.1
Added a new aspect ratio preference to restrict window sizes to multiples of the emulated display.
Fixed a cosmetic issue where emulators would fail to exit full screen mode properly when a ROM was closed with the Command-W shortcut.
Resolved an issue that caused PS4 Dual Shock controllers to crash Emulator Enhancer.
Improved support for HID hat switches (RetroBit USB Adapter et al).