LineWarsDS is a port of the developer's 15yr old DOS project, known as Line Wars II. The game is a 3D space flight SIM of sorts. The Dev relates it to Wing Commander and Elite.
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi