The rather popular Playstation emulator for Android called ePSXe has been updated to version 1.8.9 and along with this update comes some pretty nice improvements, especially if you own an Xperia Play device. If you own an Xperia Play, ePSXe now supports your device's touchpad should you be in the need to use it.
Other improvements include optimizing the Open GL plugin for 2D games as well as the addition of an experimental multi-tap support for up to 4 players at once. Depending on the game you need to enable multitap port 1 or 2.
Other than that, ePSXe has also received a few bug fixes for the core of the emulator to improve performance as well as the emulator just running better overall. If you own a copy of ePSXe, the download is now available off of Google Play.
Google Play Link: ePSXe