If you're a student at either a school, college, or university, and you're studying a subject that would warrant the use of a game engine such as Epic Games' Unreal Engine 4, you could be able to use it free of charge.
Epics Games announced on Friday that their engine is completely free to use within academic institutions, and reads as follows:
'So, starting now, Unreal Engine 4 is free to use for colleges and universities. The engine can be installed and used on all school owned computers, and personal copies can be provided free of charge to all students enrolled in accredited video game development, computer science, art, architecture, simulation, and visualization programs.'
This means you won't be paying the $19 per month subscription, and you'll still receive all of the regular updates, however if any of the games created whilst using the software within academia are put forward as a commercial product, you'll have to pay 5% royalty to Epic Games. But even so, it still sounds like a great deal and will allow many aspiring games developers, architects, artists and more to get real experience with software being put to use in many industries.