A PS3 emulator called aPS3e can run on an Android device and is free on the Google Play Store.

Android plays host to a ton of emulators, and it turns out a Wii U emulator just leaked for the platform. Don't get your hopes up, though.

Here is the gist: Download and install the Android SDK, which gives you access to the emulator. Android developers should already have this step done.

The RPCS3-Android emulator, which brought PS3 emulation to smartphones, has been discontinued. But a replacement app has just been released.

You guessed it - it's a TI-89 emulator. Not TI-83, not TI-86 - TI-89. Except this time, you need your own ROM to make it work, which should circumvent the intellectual rights issue.