3/3 the way there. I just uploaded my game (Though it is in browser, I hope that's no trouble cuz I really can't get it to become an exe file without paying, and I can't pay, still I won't be that mad if it gets removed because I get with more than 500 participants, admins probably won't be having the greatest time of its lives while reviewing every single game just to found out some guy couldn't follow an indication.)
PD: If any admin is reading this I really appreciate your job, I hosted an event only once and I hope I'm not doing it again soon.
So, as some of you guys said, mixing UFOs and fish is tricky, and I also surprised when this limitation came up. I don't think my idea is revolutionary or anything but I think it works (kinda). Basically the player is an alien who's travelling in his UFO with 1 out of 3 fish, that he has chosen as his pet, and it is an endless game in which you take care of your fish while at the same time you have to move your UFO by selecting one of the two windows shown repetively. However, you will lose score everytime so if you want to get past the default score (500), you have to move faster, thus meaning you could chose the wrong window more repetively or make you forget about your fish. The game ends if your fish dies.
I know most of you probably use WASD, but I chose the arrow keys for my game because I wanted to make kind of a intuitive interface, which I don't really know if actually worked.
As I can't get a subscription to the premium Construct 2 or 3 (I literally can't use any money online), I got limited to only 100 events, which is kinda the equivalent to 100 lines of code or so (idk, I don't know how to code) so the game's a bit messy and have 3 main bugs that make me worry the experience won't be the better it could be, but at least 2 out of 3 of them aren't really that serious and the other one is a bit rare.
I'm probably not gonna win this jam, but at least I got some experience and I really like the fish designs I came up with (literally 3 since I suck both at animation and leading a team, lol).
So anyway, here goes nothing: https://missingwilliam.itch.io/efish-browser-version