https://bugzilla.redhat.com/show_bug.cgi?id=2024917
--- Comment #2 from Artur Frenszek-Iwicki fedora@svgames.pl ---
One thing that is missing is an appdata file [1]. Guidelines say "SHOULD", so this is not a blocker, but please consider adding one, as it will make graphical installations much easier, which is probably important for the class of users who use games.
I'll probably add one later, but even then, this won't change anything, since Gnome Software has a minimum icon size criteria (48x48 or 64x64, if I remember correctly) and apps which don't provide large enough icons don't show up in search results. (I guess this could be mentioned in the Guidelines, somewhere? Couldn't find it anywhere.)
Though I guess I could use hq2x or something to just scale up the 32x32 pixmap.