a port of a game called Gnome Quod. It is similar to Connect Four only that you are trying to draw the corners of a square instead of a row. The goal of the port was to add a DS-friendly interface while keeping the (quite addicting) game mechanics.
I don't have a wii u anymore to test it myself, but if homebrews are not visible on the wii u menu I think you can press L + R + minus to open the plugin menu, there should be an option called "homebrews on wii u menu" or something similar
Or when your player dies, you can say in code, if enemy exists, do nothing, but if enemy does not exist, then create enemy at certain spot. (This would be a pain tho for lots of emeies)