Thank you so much!
I used the Bitsy engine for this, which I think is the only reason I could finish it in three hours lol. Bitsy makes it easy to create tiny sprites/maps/sounds very quickly, and the basic movement code is built-in. I also reused a lot of sprites throughout the levels and picked out my colors beforehand. So it was just a matter of adding stuff until I ran out of time ;) I went way over the three hour limit in the last two Trijams I did haha.
I love Xenogears with all my heart. It is the ultimate overscoped video game lol.