yep, the grid wasnt as well done as i wanted it to be... i havent done much "puzzley" stuff so i had trouble setting it up. by the time it was working i didnt want to mess with it and wanted to move on to other stuff. definitely would want to make it more substantial in a full scale project. i kind of hated the movement speed too in a way, but there are only so many speeds the player can go at a fixed framerate and "real" pixel graphics without the thing jittering and stuttering. as a bonus i felt like it forced the player to focus more on strategizing and shooting accurately providing a bit of variance in play. and if they didnt like it the upgrade was cheap so i was like meh whatever. gradius 3 does the same thing where it starts you out unbearable slow but the first easiest thing to upgrade is speed, so its sort of like a blatantly correct choice mechanic. also the final speed upgrade was over the top lol. i forgot that you couldnt undo that and just choose to not upgrade it. maybe i should take a hint from your game and add a "sell" mechanic lol. thanks for the feedback/play!