[fedcba9876543210] ~ $8000-$ffff
1..........BBbvm
||||+- mirroring (0=V, 1=H)
|||+-- PRG size (0=16K, 1=32K)
+++--- PRG/CHR bank (b ignored in 32K mode)
This game writes to $2000/$2001 from the very first CPU cycle, did not wait one frame. As a result, menu will look garbled on most consoles until reset button is pressed.
This cartridge was built it inside a Fenix blob famiclone, maybe this NOC accepted PPU writes without one frame delay? (it was broken however, so I couldnt check that)