launchretrogirl2562

Nekketsu Kung-Fu Road (could be further improved but should be do-able for use in BB)

ROCKMAN'S SOCCER (JAPAN)

Bass Masters Classic

Shodai Nekketsu Kouha Kunio-kun

Andre Agassi Tennis (アンドレ・アガシ テニス)

Neural gear x68000

Jack NICKLAUS Golf

Sky Robo

Arcus

Puyo Puyo

Alibaba and 40 Thieves

Dunk Dream

Side Pocket

Princess and Frog

Predator

Pollywog

Mappy

Exclamation Mark/Other Symbol (!): The BIOS file is missing, misnamed, or has the wrong MD5 hash (incorrect version)

Vs. TKO. Boxing

ThunderJaws

Did u check inside Retroarch F1 -> Information or Main Menu -> Information Then select Core : Atari - 5200 It should match what it says at the documentation page 5200.rom 5200 BIOS - Required 281f20ea4320404ec820fb7ec0693b38 https://docs.libretro.com/library/atari800/ I am also running the 5200 core, and am using a52 roms...unzipped. I would try checking those...and also unzipping your roms and try that straight from Retroarch. (to exclude any misconfiguration from within Launchbox)

Walk with me!

@seaview59 ...is soon to celebrate his 10K reputation 🥳🎉

😁u have no need to apologize Cresent. We all do this on voluntary basis in our own free time. Was just, I sometimes look for the games DB page for games and when in doubt...I think the responsibility for that lies on the requester. That goes for @HADES81 as well...do try to include the gamesDB link.