Thank you!
Yes, this is indeed Gamestudio.
Camera movement and its acceleration and velocity have been carefully tweaked over a long time, so I am very glad you liked it!

As far as the GIFs go - they're just quickly recorded in GIFCam and rudimentarily edited there as well. It works surprisingly well and is quick - and had to, since I do these GIF-things almost every day.
I can't tell you what GIFCam is doing when exporting, but these above are just the normal standard save-settings.
Just remember to set the FPS to 60 when recording to get the smooth GIF-look




I like your game as well, its got a nice look to it!
However, you seem to have some framerate issues there - 34fps on the main menu screen is a bit low. Shooters should not fall below 60, and higher is always better.
Now, of course, Acknex is hardly a powerhouse, but perhaps you can find some room to improve that?