iiinova — where your digital self keeps evolving

retrodotcards.com @retrodotcards.com · 27/09/2026

This magazine only has two ads on the front and back covers, printed on really nice paper, chock full of content (114 ad free pages!) It has a nice balance of old stuff and new games for old systems, and visual design that reminds me of game mags of 20+ years ago (a good thing). I'm jealous!

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retrodotcards.com @retrodotcards.com · 24/09/2026

Pretty surreal to be in a print magazine. 12 year old me would be proud. (Issue 66 of Return Magazine, a German retro game magazine)

A photo of Return Magazine, open to the page on the ereader. On the left side is a story about the Series One games and a photo of me holding the cards up.

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retrodotcards.com @retrodotcards.com · 23/09/2026

I'll have a booth at the Detroit Retro Gaming Show on November 7th. I'll have Series One cards for sale, free ereader cards, Pixel Pup to play (including two player) and a very early look at Eridin, my upcoming strategy game for both GBA/e-reader and PC. www.detroitretrogamingshow.com

detroitretrogamingshow.com

Home | Detroit Retro Gaming

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retrodotcards.com @retrodotcards.com · 21/09/2026

I am reviving my alt account. It's now a general dev log. If you want small, frequent updates as I work on my game (coding, graphics, music, all of it), check it out. This main account will be more focused on major milestones, announcements, and ereader/gba tidbits.

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retrodotcards.com @retrodotcards.com · 20/09/2026

If you want to make sure you see everything in Pixel Pup, I whipped up an Easter eggs page. Each secret is hidden behind spoiler text. www.retrodotcards.com/pixel-pup/ea...

retrodotcards.com

Pixel Pup - Easter Eggs

All of the hidden easter eggs in Pixel Pup

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retrodotcards.com @retrodotcards.com · 18/09/2026

A nice preview of what our foster will look like :)

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retrodotcards.com @retrodotcards.com · 17/09/2026

I was glad to hear you say you can't get into the series. I love shooters and I dunno what it is about Raiden but I feel the same way. Maybe I'm not a freak?

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retrodotcards.com @retrodotcards.com · 17/09/2026

I wrote up a quick blog post talking about why I'm making a game for both the GBA and PC of all things. It also goes a little into the how side. www.mattgreer.dev/blog/making-...

mattgreer.dev

Making a game for the GBA and PC from the same codebase

Why and how I am making a game for two very different platforms.

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retrodotcards.com @retrodotcards.com · 16/09/2026

I ordered 9 packs to get free shipping :P Good thing batteries last a long time.

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retrodotcards.com @retrodotcards.com · 16/09/2026

Retro Achievements so far has Pixel Pup at about 15 hours to complete, which is about right imo. retroachievements.org/game/42809 #gba #homebrew

A screenshot of the Retro Achievements stats table showing "beat the game" took 5 players a median time of 15 hours and 40 minutes, and "mastered" also took 5 players 15 hours and 40 minutes.

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retrodotcards.com @retrodotcards.com · 16/09/2026

And if you look closely, just about every color is different across the two. The PC is how I drew the graphics in my pixel editor and the GBA color shift is due to it using 15 bit color (versus the PC's 24 bit).

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retrodotcards.com @retrodotcards.com · 15/09/2026

It was frustrating and irritating just watching you play.

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retrodotcards.com @retrodotcards.com · 15/09/2026

Scrolling a background on the GBA is quite chunky due to the low resolution and only 60 fps framerate. The PC has many times more resolution and an uncapped framerate. It's harder to see, but the character sliding is chunky on the GBA too.

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retrodotcards.com @retrodotcards.com · 15/09/2026

The PC version of Eridin will largely be just like the GBA version. But it will get some quality of life improvements and graphical flourishes here and there. Here's a simple example. #gamedev #indiedev #whatbigpixelsyouhave

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retrodotcards.com @retrodotcards.com · 14/09/2026

It sort of did as Pixel Pup for the GBA. I'm now working on a new game that I hope I will be able to release on the e-reader 🤞

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retrodotcards.com @retrodotcards.com · 14/09/2026

Last post on this. The store closes tonight at 10pm eastern. Back to your regularly scheduled doom scrolling.

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retrodotcards.com @retrodotcards.com · 13/09/2026

The RetroDotCards store will shut down tomorrow at about 10pm eastern. retrodotcards.bigcartel.com

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retrodotcards.com @retrodotcards.com · 12/09/2026

My first goal for my GBA/e-reader/PC strategy game is to bring this screen to life. #indiedev #screenshotsaturday

A screenshot of the battle intro screen. It shows a rabbit-like creature with a cape, sword, and a worn out look on his face. He is facing a goblin who holds a sword, is wearing leather armor, and has a goofy look on his face.

The text reads "Rimcain: Invasion of Ru'oal Village"

The background is a fantasy style map in beige/grey.

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retrodotcards.com @retrodotcards.com · 11/09/2026

The gba version will use fixed point and the pc version will have floating point. Thankfully it's not an action game so floating point won't come up too much, mostly just animations. If it was an action game I think this would be more annoying.

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retrodotcards.com @retrodotcards.com · 11/09/2026

I'm making my next game be both a GBA/e-reader game and a PC game, from the same code base. This will be a good deal of extra work, but it will be worth it.

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retrodotcards.com @retrodotcards.com · 10/09/2026

I've started exploring this and plan to keep picking at it on the side. I still think it *might* be possible, but I don't think it will be easy. The main problem is the e-reader itself takes over hardware resources that the wireless game needs. I think there might be workarounds though 🤞

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retrodotcards.com @retrodotcards.com · 10/09/2026

It figures right as the store is winding down I discover a cheaper international shipping option. I really wish I had known about it a year ago...

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retrodotcards.com @retrodotcards.com · 10/09/2026

The RetroDotCards store is shutting down in 4 days. International shipping is now $9 cheaper. retrodotcards.bigcartel.com

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retrodotcards.com @retrodotcards.com · 10/09/2026

I've not liked any of MercurySteam's Metroids. But hopefully this one will change my mind.

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retrodotcards.com @retrodotcards.com · 09/09/2026

Oh nice, I had no idea. That's really cool.

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retrodotcards.com @retrodotcards.com · 08/09/2026

Yeah I thought they modernized the look pretty well ... Except kid Link. He does look off.

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retrodotcards.com @retrodotcards.com · 08/09/2026

I think an e-reader game that communicates over the wireless adapter might be possible. It would be just about the most asinine video game ever made, which intrigues me :)

Two Game Boy Advances both with an e-reader plugged in, then a wireless adapter plugged into each e-reader.

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retrodotcards.com @retrodotcards.com · 08/09/2026

So far I think it looks pretty good. And they addressed the biggest issue with the game by giving it a modern camera. The locked camera really makes the original hard to go back to.

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retrodotcards.com @retrodotcards.com · 08/09/2026

An ereader game that also uses barcodes would be pretty funny :)

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retrodotcards.com @retrodotcards.com · 08/09/2026

But the only way to know for sure would be to have these devices to test with and know their protocols. So the best I can say is maybe.

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retrodotcards.com @retrodotcards.com · 08/09/2026

They actually might work. An ereader game can access the serial port registers (ie, communicate through the link cable port) so it might be possible to communicate with other link port devices.

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retrodotcards.com @retrodotcards.com · 04/09/2026

ebay has been around for what, 200 years? It's interesting to add such a disruptive feature now.

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retrodotcards.com @retrodotcards.com · 04/09/2026

If any bugs come up, I'll fix them and cut a new release. But other than that, Pixel Pup is done.

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retrodotcards.com @retrodotcards.com · 03/09/2026

Not necessarily. I might figure something out. To be totally honest, I think it's unlikely, but you never know 🤞 I'm shutting the store down because Series One is pretty much sold out and I don't want to pay a lot of fees with nothing to sell.

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retrodotcards.com @retrodotcards.com · 03/09/2026

Hmmm ... nearly 5000 files changed. Oops, I had regenerated all of the random puzzles. Even when you're the sole developer on a project, code review is still good practice. #indiedev

A screenshot of a GitHub diff showing that from version 1.0.4 of Pixel Pup to 1.1.0, over 4800 files changed.

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retrodotcards.com @retrodotcards.com · 03/09/2026

Pixel Pup 1.1 will either be out this evening, or tomorrow at the latest.

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retrodotcards.com @retrodotcards.com · 02/09/2026

Sometimes puzzle race mode will really challenge your puzzle solving skills. Such as this doozy.

A screenshot of a puzzle in pixel Pup. The entire puzzle is empty except for one tile.

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retrodotcards.com @retrodotcards.com · 02/09/2026

Even just testing puzzle race mode by myself is fun. I'm excited for my wife and I to compete. If it leads to me sleeping on the couch, I have succeeded! 😛

A screenshot of puzzle race mode in Pixel Pup. It shows two players solving 5x5 puzzles with an indicator in the lower corner showing how far into the race each player is.

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retrodotcards.com @retrodotcards.com · 01/09/2026

I haven't entirely written off the e-reader. I'd love to do more with it if feasible. But to be totally honest, it probably won't become feasible.

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Reposted by retrodotcards.com

retrodotcards.com @retrodotcards.com · 01/09/2026

The RetroDotCards store will close on September 14th. I will be selling packs at the Detroit Retro Game Show, November 7th. There's a good chance after that, the cards will be unavailable for purchase. retrodotcards.bigcartel.com

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retrodotcards.com @retrodotcards.com · 01/09/2026

I might. So far I have open sourced two of the games, you can get the raws for them here: github.com/city41/eread... github.com/city41/eread...

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retrodotcards.com @retrodotcards.com · 01/09/2026

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retrodotcards.com @retrodotcards.com · 31/08/2026

Doh, that link is cuz I typed "cool.you" accidentally. Didn't realize the link would stay.

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retrodotcards.com @retrodotcards.com · 31/08/2026

Oh wow, that's really cool you write for them. If OSG ever decides to do an e-reader story I'm happy to help.

cool.you

For Sale Domain: cool.you

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retrodotcards.com @retrodotcards.com · 31/08/2026

The image is low res as they would prefer I not share the contents of the article. It's in German and covers the history of the e-reader. My physical copy of the mag is still on its way, gotta cross the pond and all that.

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