im not sure what your issue is here the tate mode does rotate right this is what arcades do

@chizzer thanks for the reply ill give it a shot

@polyfusion said in Help - Retropie Rotate 90 degrees with 4:3 Aspect Ratio: . I'm using a 64GB image that has version v2.7.3RP What do you mean a 64GB image? Retropie isn't available as different images. If you got a third party image from elsewhere, you really should be looking there for support.

I found one! A friend asked me for a seperare Tate-Card to switch to when using his Tate-Display. Simply use the Arcade-Sytem instead of seperate Mame and FBA-Systems. Enter a game with Mame2003-core, activate rotation and save the system configuration file (not game or core override!). Done. The rotation setting will also apply to all FBA-games.

Regular MAME can auto-rotate the screen; does RetroArch have a similar feature? If not, you could consider switching to regular MAME in stead.

@cybermrc you probably figured this out by now, but the cocktail switch only serves to flip player 2 upside-down. It won't induce the initial rotation.

I'm thinking about a cocktail table and was wondering if you ever figured it out?