Nice to hear it's possible to run it on an SD!
Note to the developer: The game is not very playable when controlling with the joysticks. In addition to being very sensitive, the cursor moves too far away from the player, making it hard to judge in which direction the tank is aiming.
I don't own a deck myself nor originally intended for it to be played on one, so I'm afraid there's nothing I can really do on my end to improve this. There's no built-in functions in GM:S for this kind of thing as well since it's an old engine, but I could try and maybe add a mouse sensitivity/camera speed slider.
Things get so chaotic that it becomes impossible to identify and track where the player is or where the enemies are. Sometimes, it's difficult to pinpoint exactly where the cursor is.it gets so disorienting.
I'll see if I can improve the readability of the aim/cursor soon.
I personally am a huge fan of such games, would probably be first in line to get a copy as soon as it's out. Hope the feedback helps. best of luck.
Thank you so much!