There's only two known ways:
/system/etc/check.xml
file by adding <ho6>{packagename}</ho6>
where {packagename}
should be replaced with package name of running game (like daniillnull.nulls.brawlstars
for Null's Brawl).Emulators use binary translation to run games. It converts armv7 instuctions to x86 in runtime. But... it doesn't work perfect. Original Supercell games require some special things to be implemented in binary translator, but usually emulators disable it for Null's due to compatibility. As for Null's client is based on original game client, nothing works so.