Yes, you can install Unreal Engine on your computer as long as your system specification is as such:
- Desktop PC or Mac.
- Windows 8.1 64-bit or Mac OS X 10.9. 2 or later.
- Quad-core Intel or AMD processor, 2.5 GHz or faster.
- NVIDIA GeForce 470 GTX or AMD Radeon 6870 HD series card or higher.
- 8 GB RAM.
So go ahead. Build your own Epic game.
Regards.