@paullypenguin

Please, add more info as requested: https://retropie.org.uk/forum/topic/3/read-this-first

No-intro romsets is the best since those are unmodified and taken from a clean dump. They do not have anything else added to them that is not default in the original game.

As @Clyde says You can use Romcenter or you can use Clrmamepro with the .dat files from no-intro website and then filter them out for 1G1R also known as 1 Game 1 Rom. This process is called (Parent-child).

This will make sure that you don't get clones and only keep one game from one specific region. Ex. Sonic the Hedgehog (USA) instead of getting both Sonic the Hedgehog (USA) and Sonic the Hedgehog (JAP) in your Mega Drive collection.

There are a couple of tutorials out there on the internet that you can use.

@m2306 Lag really doesn't have to be an issue, but it can be with the wrong hdtv. On mine I can't notice any input lag. Maybe I would be able to notice it if I could play the game side by side, crt tv vs hdtv, but it's all good for me the way I've got it set up right now.

@drakaen391 said in Net play with GBA:

Partly thinking Pokemon battle and trades

I don't think that'll work in the way you're expecting it to. RetroArch's Netplay feature is really more like synchronized screen sharing. This works great for old console games where multiple players shared a TV screen and a couch back in the day. However, most GBA games required two units to be linked and Netplay doesn't support that. An exception would be the original GameBoy emulation core, lr-tgbdual, where two distinct units are emulated on the same screen in parallel. Another possible exception that applies directly to GBA games are the titles that allowed two players to pass a GBA back and forth, such as the 'Advance Wars' series. All in all, while it's entirely possible to Netplay GBA games in RetroArch, it's probably not all that practical.

@lucienstorm Use the Runcommand onstart script (https://retropie.org.uk/docs/Runcommand/#runcommand-onstart-and-runcommand-onend-scripts) and log the start of the game to a text file. Put in the onstart script something like

echo "Started $3 at `date`, for system $1" >> $HOME/playcount.txt

and then inspect the playcount.txt file periodically.

@billybag No problem dude. We are here as a community to help and only direct people to the wiki as otherwise we'd be answering the same questions over and over that are already documented.