The Raspberry Pi is essentially a less-powerful PC when it comes to emulation, so that may have some limitations depending on the types of games you want to play. For example, I installed 12 video game ROMs and ISOs onto the Raspberry Pi 4. Based on my experience, more demanding games from platforms like the Nintendo 64 and PS1 may have performance problems. For example, when playing Tekken 2 for the PS1, the video quality was very choppy and there were plenty of skipping frames. If you run into problems with a particular game, I recommend that you do additional research on tweaking settings, trying a different emulator or trying a different ROM.