2017 •Sega Genesis
Clone of JungleTac's One Day of Mr. Potato (or "Mr. Onion"); the graphics are entirely redone. Released in Sega Genesis Flashback.
GPi Case by Retroflag, priced around $70, Vertical retro handheld, running Linux (RetroPie), powered by Broadcom BCM2835 (Raspberry Pi Zero W)
58 of 65 catalogued fields are filled in for this handheld. Anything the catalogue has not recorded is labelled Not documented rather than estimated.
Marketplace rows use affiliate-friendly links where available. Average price stays based on the console database, not live per-store pricing.
| Store | Price |
|---|---|
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Amazon
Amazon search results
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$70 (+$36 for CM3 cartridge) (+$40 for CM4 cartridge) |
|
Aliexpress
Imported from spreadsheet hyperlink
|
$70 (+$36 for CM3 cartridge) (+$40 for CM4 cartridge) |
|
Retro Game Restore (CM4 Cartridge)
Imported from spreadsheet hyperlink
|
$70 (+$36 for CM3 cartridge) (+$40 for CM4 cartridge) |
|
Alibaba
Alibaba search results
|
$70 (+$36 for CM3 cartridge) (+$40 for CM4 cartridge) |
Affiliate disclosure and terms are linked in the footer.
Budget shortlist candidate
GPi Case from Retroflag is the kind of retro handheld that makes sense only once you stop reading the spec sheet like a trophy case and start reading it like a buyer.
GPi Case is not trying to win every argument at once; its appeal lives in the balance between emulation comfort, day-to-day usability, and whether its price still feels sane.
Before the review gets opinionated, here is the clean spec picture. This table is the reality check that keeps the rest of the write-up grounded.
| Category | Details |
|---|---|
| Brand | Retroflag |
| Release | 2019 / 06 |
| Form factor | Vertical |
| Operating system | Linux (RetroPie) |
| Overall performance | 6/10 · B |
| SoC | Broadcom BCM2835 (Raspberry Pi Zero W) |
| CPU | ARM1176JZF-S, 1 Core, and 1.0 GHz |
| GPU | Broadcom VideoCore IV and 250 MHz |
| RAM | 512 MB DDR |
| Display | 2.8 inch, IPS, and 60 Hz |
| Resolution | 320 x 240, 4:3, and 142.86 PPI |
| Battery and cooling | AA x3 (Swappable) |
| Storage and I/O | External MicroSD, Micro USB, DC Input, and 3.5mm Headphone |
| Price | $70 (+$36 for CM3 cartridge) (+$40 for CM4 cartridge) |
If this review pulls you in, the fastest next rabbit hole is GPi Case 2W and GamePi20, because those are the products most likely to clarify whether GPi Case is your real match or just your current curiosity.
GPi Case pairs the hardware with 2.8 inch, IPS, 60 Hz, 320 x 240, 4:3, and 142.86 PPI. That is the kind of detail stack retro buyers should linger on, because a handheld can be technically capable and still feel wrong if the aspect ratio, sharpness, and scaling story are off. The screen protection is listed as Plastic, a small clue that often hints at how polished or rough the front face might feel in daily use.
The controls are described with Cross Upper placement, 4 Buttons, and L1, R1. That matters more than many spec sheets admit, because the difference between a fun handheld and a fatiguing one often shows up in the D-pad, shoulder shape, and how naturally the thumbs settle into place. This is where a retro handheld stops being abstract and starts becoming a piece of physical furniture for your hands.
The 4:3 aspect ratio adds another layer to the story. Retro gaming screens are never neutral. They reward some libraries, punish others, and always whisper a preference about how the device expects to be used.
GPi Case is best framed as a machine for players who care about nostalgia, portability, and quick pick-up sessions. That may sound obvious, but it is the difference between buying a handheld that becomes a habit and one that turns into a drawer resident.
The vertical shape matters here because it changes comfort, portability, and the kind of nostalgia the device leans into. The fact that it runs Linux (RetroPie) also affects what kind of setup work, app ecosystem, and tinkering ceiling buyers should expect.
The release timing listed as 2019 / 06 helps place it in context. In this market, timing changes expectations: a device that felt expensive at launch can look sharply judged six months later, while a newer device may need to justify a premium.
GPi Case is described with battery: AA x3 (Swappable). Those are not background details; they shape noise, comfort, endurance, and whether the device feels eager to be used or mildly exhausting to keep fed. Audio is covered by Single Mono Front facing and 3.5mm Headphone, which matters for sofa play, travel, and late-night sessions when speakers and headphone output can quietly make or break the experience.
Physically, the device is outlined by 135 mm x 81 mm x 32 mm, 280 grams, Plastic, and DMG Grey. This is where you start picturing whether it is truly pocketable, only jacket-safe, or clearly a bag companion. Buyers often underestimate how much daily affection is driven by the little things: where the ports sit, how the shell feels, and whether the handheld seems built for real use instead of product photos.
The practical I/O story includes External MicroSD, Bluetooth, WiFi, and Micro USB, DC Input. These details matter because many retro buyers are also collectors, tinkerers, dock-and-TV players, or people with large libraries that need sensible storage and transfer options.
| Console | Angle | Price | Performance | Why Click Through |
|---|---|---|---|---|
GPi Case 2W Retroflag | More Powerful | $80 | 8/10 · A- | same operating system, vertical layout, tracked around $80. |
GamePi20 WaveShare | Better Value | $30 + Pi + Battery (DIY) $60 + Battery (Pre-built) | 6/10 · B | same operating system, tracked around $30 + Pi + Battery (DIY) $60 + Battery (Pre-built), rated 6/10 · B. |
D-R35S Plus SZDIIER / Diium | Closest Match | $40 | 4.5/10 · C+ | vertical layout, tracked around $40, rated 4.5/10 · C+. |
GPi Case 2 Retroflag | More Powerful | $80 (Pi CM4 not included) $90 (with Dock) | 10/10 · A+ | same operating system, vertical layout, tracked around $80 (Pi CM4 not included) $90 (with Dock). |
GPi Case becomes much easier to judge once it is forced into the same room as GPi Case 2W, GamePi20, and D-R35S Plus. This is where a vague impression turns into a real buying decision, because each nearby rival throws a different kind of pressure on the table.
GPi Case versus GPi Case 2W is interesting because more powerful is the obvious angle. GPi Case 2W sits close enough to GPi Case to make the comparison meaningful, but different enough to sharpen the buying decision. In practice, gPi Case 2W is tracked around $80. Its overall rating is 8/10 · A-. From another angle, gPi Case versus GamePi20 is interesting because better value is the obvious angle. If GPi Case feels almost right but not quite, GamePi20 is the sort of nearby detour that can completely change the shortlist. GamePi20 is tracked around $30 + Pi + Battery (DIY) $60 + Battery (Pre-built). That said, its overall rating is 6/10 · B. More importantly, gPi Case versus D-R35S Plus is interesting because closest match is the obvious angle. D-R35S Plus sits close enough to GPi Case to make the comparison meaningful, but different enough to sharpen the buying decision. D-R35S Plus is tracked around $40. From another angle, its overall rating is 4.5/10 · C+.
The real benefit of this comparison set is not that it declares a single winner. It reveals which compromise profile feels least annoying over time.
The heart of the machine is the Broadcom BCM2835 (Raspberry Pi Zero W). CPU duties are handled by ARM1176JZF-S. Graphics are handled by Broadcom VideoCore IV. Memory is listed at 512 MB DDR. The sheet rates the overall performance at 6/10 · B, or roughly 3 on the normalized scale.
The CPU side is described with 1 Core, 1 Thread, and 1.0 GHz, which is more useful than brand names alone because it hints at how much headroom the handheld should have before emulator tuning gets annoying. On the graphics side, 250 MHz and ARM helps sketch the ceiling for heavier systems, upscale experiments, and shader curiosity.
GPi Case looks strongest with Game Boy (A), NES (A), Sega Genesis (A), and Game Boy Advance (B), which gives the review something more tangible than a vague "good for retro" verdict. The listed emulation limit, Most SNES runs at 60 FPS but lags with FX & Mode 7 games, most 2D PS1 runs fine (not all at full 60 FPS) but lags with 3D games, is the kind of line buyers should actually respect because it tells you where the romance ends and the compromise begins.
The middle tier of compatibility, including Super Nintendo (C) and PlayStation 1 (C), is where the buyer needs some honesty. These are usually the systems that separate a casual dabbler from a user who is happy tweaking emulator settings, testing cores, or accepting the occasional rough edge.
GPi Case is currently tracked around $70 (+$36 for CM3 cartridge) (+$40 for CM4 cartridge) and lands in the $75 - $100 pricing band. Price does not just change whether a device feels affordable. It changes what kinds of flaws buyers are willing to forgive.
The spreadsheet points shoppers toward Aliexpress, Amazon, Retro Game Restore (CM3 Cartridge), and Retro Game Restore (CM4 Cartridge) for availability. That matters because storefront quality, shipping confidence, and after-sales expectations often shape the emotional experience of a purchase before the box even arrives. The listed strengths orbit around solid build quality.
The tradeoffs are not buried, either: the sheet flags powered by aa batteries. The smartest shortlist is usually the one that sees the flaw clearly and decides it is either acceptable or disqualifying before the credit card comes out.
GPi Case leaves the strongest impression when you frame it as a recommendation for players who care about nostalgia, portability, and quick pick-up sessions. That is the lens that makes the strengths feel intentional instead of accidental.
Budget shortlist candidate is not just a catchy label here. It is the cleanest shorthand for why this device deserves attention. The compatibility profile around Game Boy (A), NES (A), Sega Genesis (A), and Game Boy Advance (B) gives it a concrete identity. The main caution remains powered by aa batteries.
If the device sparks your interest, the smartest next click is usually GPi Case 2W, followed by GamePi20, because that is where the shape of the market around it comes into focus. The point is not to stop the reader from exploring. It is to make every next click smarter.
Games shown here match systems this handheld can run at a B grade or better.
2017 •Sega Genesis
Clone of JungleTac's One Day of Mr. Potato (or "Mr. Onion"); the graphics are entirely redone. Released in Sega Genesis Flashback.
1992 •Game Boy, Nintendo 3DS
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1991 •Nintendo 3DS, Nintendo Entertainment System, Wii
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2001 •Game Boy Advance, PlayStation 2
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1990 •Nintendo Entertainment System
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2015 •Nintendo Entertainment System
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1987 •Nintendo Entertainment System
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1989 •Nintendo 3DS, Nintendo Entertainment System, Wii, Wii U
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1990 •Nintendo Entertainment System, Wii
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Every answer is built from this console's own catalogue record. Where the record is empty, the answer says so rather than guessing.
The console database lists the GPi Case under the brand Retroflag. It does not document whether the GPi Case is an officially licensed Retroflag product.
The console database lists the release date as 2019 / 06 and the price as $70 (+$36 for CM3 cartridge) (+$40 for CM4 cartridge) for the GPi Case.
The console database lists the system on a chip as Broadcom BCM2835 (Raspberry Pi Zero W), the CPU as ARM1176JZF-S, and the RAM as 512 MB DDR for the GPi Case.
The console database lists the dimensions as 135 mm x 81 mm x 32 mm, the weight as 280 grams, and the battery as AA x3 (Swappable) for the GPi Case.
The console database gives the GPi Case a grade of B+ or better for 3 systems: Game Boy, Nintendo Entertainment System, and Sega Genesis.
The marketplace rows shown for the GPi Case are search and marketplace links, not a verified live price feed. The console database does not verify live prices or stock, so check the linked marketplace listings for current availability.