Nintendo

Nintendo Entertainment System (NES)

Nesoid

The only free NES emulator without restrictions or ads. This project is based on sources, published by original Nesoid developer, who in turn used code of GPFCE, forked from FCEUltra, currently incarnation of which is known as FCEUX. Nesoid is not available on Google Play, but you can download it by visiting its Sourceforge Project Page. Please note that you will have to enable “Unknown Sources” in your device settings in order to install the APK file.

NES.emu

NES/Famicom emulator based on FCEUX 2.2.2-svn (GPL), designed and tested on the original Droid/Milestone, Xoom, Galaxy S2, Nexus 7, and Xperia Play, but works on many devices with similar specs. It’s based on an up-to-date revision of well-known PC emulator FCEUX, offering some of the most accurate NES emulation on Android.

Super Nintendo Entertainment System (SNES)

 Snes 9X EX+

Based on Snes 9x 1.53, this emulator offers almost complete game compatibility. 1GHz+ device is recommended for best results, but for older devices a faster version is available at the developers website. Snes 9xEX+ is completely free without ads or any sort of restrictions.

SuperGNES

Developed from the ground up to deliver the fastest play possible. SuperGNES offers couple of noteworthy features such as OpenGL support, dropbox cloud sync, 3rd party controller support and much more. Lite version of SuperGNES is also available, but it does not offer saving the game progress of any kind.

Nintendo 64

Read more about Nintendo 64 emulation

SuperN64

SuperN64 is a modified version of the Open Source project Mupen64+, which is licensed by GNU GPL v3. Modifications include performance enhancements for specific Phone Models such as the Nexus 4 and the Galaxy S4 and small UI improvements.

Mupen64+AE FREE

Mupen64Plus, Android Edition (AE) is an N64 emulator for Android. It is currently in Beta testing, which means it is a work in progress. There are still many graphical, lag, and audio problems, even on modern devices. If you like to submit bug reports or help in Mupen64+ AE development, you can do so by visiting developers website.

Gameboy, Gameboy Color and Gameboy Advance

Gameboy Color A.D.

Play all of your favorite classic games for free on your phone. Infinite replay value with built in achievements, hi-scores, game saves/loads, cheats, portrait and landscape modes, and more. Works with the wiimote controller apps, allowing users to play with an actual controller.

No Download – Unfortunately, this emulator disappeared from the Play Store

John GBA Lite

This is one of the most popular GB/GBC emulators that still receives regular updates. It supports both internal storage and external SD cards for game storage, has ZIP support, supports external controllers and on-screen buttons. This lite version is ad supported and there are no save game restrictions. The full version (without ads) can be purchased here for $2.99

VGBA

VGBA runs GBA games on your Android phone or tablet, saves GameBoy game progress at any time, and even lets you cheat by adding health points, strength, or becoming invincible. VGBA will also let you play with generic Bluetooth joysticks, Xperia gaming buttons, Moga gamepads, iCade joysticks, and Sixaxis controllers.