I was playing super mario bros. with no title screen did someone rip the game from a pirate mulyicart? Because I used tile lay pro to check if there was a Title screen and found pieces of other games.
Yeah, that copy has been around for longer than the real copy of the cart. It's probably from a pirate cart. No way more than a couple tiles from another game could fit in there though, SMB uses all it's memory. Actually the title screen data (screenmap, not the graphics) was fit into a couple spare tiles in CHR-ROM, those could've been what you saw a hacked version of perhaps.
But why did the title screen become missing is it because the they don't want Nintendo on thier back with lawsuits?
Could've been any reason. A lot of pirated games will have the company name blanked out or changed to something generic like "copyright". I guess that could delay a lawsuit.