Horizon was inspired in large part by the TV show Star Trek, so much so that the design team responsible for the arcade version included the USS Enterprise in their design. The Android version is also quite similar to the PC version, which is quite impressive given how accurate it really is. Some of the most popular Horizon Emulator apps include the HTC Evo Shift, which allows you to choose from several versions of the show including the classic Star Trek: The Original Series. The same is true for the PC version which allows you to play the episodes for free and pick your favorites. There are several other Android apps as well, including ones which allow you to play the HTC Evo Shift in your car or office, allowing you to travel back in time a couple of hundred years or so ( Horizon actually utilizes real time data to play this effectively).
The best thing about Horizon is that most people who purchase the PC version will be able to transfer their data to the phone to use in the real world. This means that not only can you play horizon on the go, but you can continue to do so long after your PC has shut down. All of this means that Horizon should have a long life ahead of it, and its constantly being updated with new episodes of your favorite sci-fi series, making it one of the best emulators available right now.