yeah of course not every game needs an "official release", i did just see this was made for a game jam (in three days!!!) which makes it all the more incredible. but if you do ever consider it, i think adding more cards, more enemies so theres more variation, maybe a sort of "boss" wave every 10 or so waves, maybe even changing the background and platforms + platform placement/number (to give the illusion you are progressing further and further) would do the trick. and maybe at the end you finally reach the ground lmao