Trump Invaders is based on my game Stoned Invaders. It is similar in style to the type of games that were about when I started playing around 1980. The first game I played was Galaxians on a table in a pub that had the game built in. The idea was to have a drink on the glass table top and be able to play the game within. Obviously I was way to young to drink but I loved the game. You don’t see video games in pubs much anymore.
Trump Invaders was developed using C++ and DirectX.
It is free because compared to modern games it is not good enough to charge for. That does not mean it was easy to develop or that I won’t decide to charge for future versions.