A complete set of 2,270 ROMs, even for an older emulator, takes up significant space. While the files are compressed (ZIP format), users should expect the complete collection to require several gigabytes of storage.
However, once set up, the convenience is unmatched. Most frontends (like Retroid, Dig, or Hyperspin) will automatically scrape artwork and descriptions for these games, turning a folder of files into a fully interactive arcade museum in your pocket.
While everyone plays Pac-Man, this ROMset contains obscure masterpieces:
All 10 run flawlessly on the 0.37b5 2270 set.
A common mistake is downloading "mame4all 037b5 complete romset 2270 new" and dragging the entire folder to your device, only to find that 50% of the games show "Missing files" or a black screen.
To appreciate the value of this download, you must first understand the jargon:
The MAME4all 037b5 Complete Romset is not just a pile of old files; it is a time capsule. It represents the perfect balance between game variety, emulator performance, and device compatibility. For anyone looking to build a retro gaming handheld or breathe new life into an old Android device, this 2,270-game collection remains the ultimate starting point. mame4all 037b5 complete romset 2270 new
The Ultimate Guide to the MAME4all 037b5 Complete Romset (2270 Games)
If you are into retro gaming on low-power devices like the Raspberry Pi Zero, older Android phones, or the Dingoo A320, you’ve likely crossed paths with MAME4all. While modern MAME has moved far beyond it, the 0.37b5 romset remains a "gold standard" for performance-focused emulation.
In this guide, we’ll break down why the "2270 new" romset is still relevant and how to get it running perfectly. What is MAME4all 0.37b5?
MAME (Multiple Arcade Machine Emulator) updates its versioning constantly. However, as the emulator becomes more accurate, it requires more processing power. MAME4all is a high-performance port based on the very old MAME 0.37b5 engine (released circa 2000).
Because it is optimized for ARM processors, it is the default choice for: Raspberry Pi 1 / Zero (using RetroPie’s mame4all-pi) Classic Handhelds (BittBoy, Miyoo Mini, PocketGo) Older Android devices Why "2270 New"?
The original 0.37b5 set contained fewer games. Over time, enthusiasts have cleaned up, verified, and supplemented the set to include approximately 2,270 ROMs. This "complete" version ensures you have all the supported clones, regional variants, and parent sets that the MAME4all core can actually handle. Key Features of the 2270 Romset A complete set of 2,270 ROMs, even for
High Speed: Unlike newer sets (like 0.139 or 0.78), these games run at full speed on hardware with limited RAM and CPU.
Small Footprint: The entire collection is significantly smaller than modern sets, making it perfect for 8GB or 16GB SD cards.
Stability: Because the 0.37b5 core is no longer changing, once you have the correct romset, you’ll never have to worry about a "broken" game due to an update. How to Install and Use the Romset 1. Match the Version (Crucial!)
MAME is notorious for being picky. You cannot use a MAME 0.250 romset with a MAME4all 0.37b5 emulator. If the versions don't match, the game simply won't load. Always look specifically for the "0.37b5" label. 2. The ROM Folder
On most systems (like RetroPie or Recalbox), you will place your zipped files into the following directory:~/RetroPie/roms/mame-mame4all/ 3. Handling Samples
Many early arcade games (like Donkey Kong or Galaga) used discrete audio circuits that aren't easily emulated. For these, you need a Samples pack. All 10 run flawlessly on the 0
Place these .zip files in the samples folder within your MAME directory. Do not unzip them. Performance Tips for MAME4all
Smooth Scaling: If your screen looks "shimmery," check your emulator settings for "Video Scaling." Set it to "Integer Scale" for the crispest pixels.
Overclocking: If you are using a Raspberry Pi Zero, a mild overclock can help with more demanding games like Mortal Kombat or NBA Jam.
Controls: MAME4all usually maps controls automatically, but you can press the TAB key on a keyboard once a game is launched to remap your buttons. Verdict: Is it still worth it in 2024?
Absolutely. While it doesn't support 3D arcade games or the latest "perfect" emulations, the MAME4all 0.37b5 2270 romset is the undisputed king of efficiency. It turns a $10 micro-computer into a powerhouse arcade machine capable of playing nearly every classic from the 70s, 80s, and early 90s.
| Problem | Solution |
|---------|----------|
| Game loads then returns to menu | Missing BIOS (e.g., neogeo.zip for NeoGeo, qsound.zip for some Capcom). Place BIOS in /roms/ as well. |
| “Incorrect ROM set” error | You have mismatched ROM version – re-acquire the exact 0.37b5 “2270 New” set. |
| Game runs very slow | MAME4ALL is single-core; overclock your device (if allowed) or try lr-mame2000 instead. |
| No sound in some games | Disable “Sample Rate” 44100 → 22050 Hz in emulator options. |
In the official 0.37b5 dat file (the definition file used by ROM managers like ClrMAMEPro or RomVault), the total number of unique games (including clones, bootlegs, and parent ROMs) is not 800 or 1,500—it is 2,270.
Each of these 2,270 entries represents a playable arcade machine configuration.