NES.emu Free
A great NES emulator for Android devices. NES.emu Free is open source and also has a rich feature set.
Features of NES.emu Free emulator:
- Accurate emulation and high compatibility;
- Memory backup and save state support, automatic save, and ten manual slots for save states;
- Supports .nes and .unf ROM-based games, optionally in .zip files
- Emulates Famicom Disk System with .fds files
- Support for VS UniSystem, press Start
- Support for Zapper / Gun, touch screen for shooting;