I ve figured out the problem
It´s my GBA fault(even tough Battletoads migth be really damaged)
It reads GBA games well but if it s a classic gameboy game it runs until I do something like up right + a then it imeadiatly freezes
I mean it freezes more or less when I press a diagonal on the d pad...
My Game Boy games are worrying me :(
When I ve bought Battletoads it worked perfectly but now it refuses to let get into level 3 because it glitches out and frezes before I have the chance I ve tried to blow into the cart and restart the game frequently but it always frezes before stage 2 boss
I...