The emulator will require a fairly speedy phone running Android 2.x, such as Nexus One or Droid Incredible to run. But it reportedly already runs faster on the Nexus One than a similar emulator on the iPhone.
Right now the user interface is still pretty rough, since it’s based on Nintendo and Gameboy Advance emulators for Android. But ZodTTD plans to add Playstation-specific controls. The emulator uses a phone’s touchscreen, trackball, and hardware buttons as controls.
ZotDD is also reportedly working on bringing the VLC media player and a Nintendo 64 emulator to Android.