Anyone knows what might be wrong with this game? It has some several graphic glitches, the background tiles are corrupted.

All other Mega Duck games seem to work fine. Considering it was Sean who dumped the last batch of games including this one I'd assume the dump is good (also the cart was verified as working in the real console) and I did check with him and apparently the only strange thing is an area of the cart that was filled with $FF in one dump and $3F in the redumps which seem to point there might be some RAM in the actual cart.

If anyone could have a look into this game would be great, curious what's so special about it regarding the rest of the Mega Duck catalog.