#devkitSMS
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sverx.mastodon.gamedev.place.ap.brid.gy
... did I mention that with the latest #devkitSMS you can write software (like... games, for instance!) for the #sega #sg1000 / #sc3000 and also compile them for the #colecovision too? 😁

#homebrew #retro #gamedev #videogames #retrocomputing #segasg1000
A simple devkitSMS sample program running on a ColecoVision emulator (ColEm 5.6)
November 7, 2025 at 3:57 PM
sverx.mastodon.gamedev.place.ap.brid.gy
I updated #devkitSMS' readme with a list of some of the many cool games developed using it so far.

Check them out, there's really something for everyone! 😍 […]

[Original post on mastodon.gamedev.place]
Some of the many cool games developed with devkitSMS so far include: * armixer24's TetrisdGG * badcomputer’s Astro Climber, Razing Core, Frontier Force, Blast Arena * cireza's the Sword of Stone * Cyttorak's Gemitas * darks Yawi * Disjointed Studio's Weka Invaders * DrlLudos’ Dangerous Demolition * Eruiz's Lunar Skirmish, Galactic Revenge, Astro Force, Bomb Jack Remake, Green Beret Remake, Crazy Pinball, Electronic Dreams, Dead Gunner, Mini MSX, Silver Valley * Guy's Grail of the Gods, Deathtrap Dungeon, Nyle - Lyne in SokobanLand * Integer Max Games' Knight Shift * Jean Monos' Little Sokoban * JoppyFurr's Snepzhen Solitaire, Ants * Louis the SEGA Nerd's Monaco Master, Sub Assault * Mojon Twins’ Cheril Perils Classic, Jet Paco and Jet Puri, Che Man, Sgt. Helmet Training Day, Super Uwol * Naarshakta's Stygian Quest * offgame's Pixner II * old_pirate’s Iron Man * PSCD Games’ Alien Cat 2 * raphnet’s SKBN, Extreme Volleyball Infernal League, Goblin Kart Rescue * Ricco's Where Is It?, Do The Same * slogra’s Jumping Jack'son * SteveProXNA's Skazka, Simpsons Trivia * Tuxedo Games' Alter Ego, Goris * Will Britton's Land on my Base, Eggie Chuck, Primates * x7r's Sutoroku * xfixium's Ms. Pac-Man Classic
November 5, 2025 at 2:35 PM
orangerevolt.bsky.social
New video uploaded on Master-Arts Pre-Alpha v0.3 for the Sega Master System.

youtu.be/CUoYhG-fWEw

#homebrew #gamedev #8bit #sega #segamastersystem #game #creativity #sandbox #indiedev #devkitSMS #masterarts
orange revolt masterarts prealpha demo v0 3
YouTube video by Orange Revolt
youtu.be
October 30, 2025 at 1:26 AM
pw32x.bsky.social
Downland for ColecoVision Day 2: Sound works better if I use the actual correct PSGLib file. Whoops! (whoopsie!) Updated a few minor things. And I do believe it's pretty much done! The updates to DevkitSMS make this port super easy #downland #tandy #coco #coleco #colecovision #devkitsms
October 21, 2025 at 9:42 PM
pw32x.bsky.social
Downland for ColecoVision Day 1: Tried out sverx's updated devkitSMS with CV support. Updated the makefile, added a few missing defines and it worked on the first try! No sound, though. And it freezes in GearColeco, probably sound related too. #downland #tandy #coco #coleco #colecovision
October 21, 2025 at 2:36 AM
sverx.mastodon.gamedev.place.ap.brid.gy
Fellow SMS Power! forum user badcomputer just posted his new #sega #mastersystem game: "Astro Climber".

download it here: https://badcomputer0.itch.io/astro-climber (pay as much or as little as you want)

#segamastersystem #retrogaming #retro #devkitSMS
October 20, 2025 at 2:10 PM
sverx.mastodon.gamedev.place.ap.brid.gy
What a weird coincidence! 😲

Today is #sega Mark III's 40th anniversary from its original release - and this morning I have pushed an updated devkitSMS/SGlib that adds support... for the #colecovision 😅

Anyway, I hope you like it. Basically now porting your SG-1000/SC-3000 game to the […]
Original post on mastodon.gamedev.place
mastodon.gamedev.place
October 20, 2025 at 1:49 PM
pw32x.bsky.social
Downland for Game Gear Day 6? 7? Who knows!: Two player life start scrolling bug seems to be fixed. I do believe the Game Gear version is done. #downland #tandy #coco #sega #gamegear #devkitsms
October 18, 2025 at 3:08 AM
pw32x.bsky.social
Downland for Game Gear Day 3,4,5: Had family over for the week so could only spend little bits of time here and there. I'm down to my last bug where going from one player to the other has a scrolling bug when the player starts. Hope to fix soon. #downland #tandy #coco #sega #gamegear #devkitsms
October 17, 2025 at 11:23 PM
pw32x.bsky.social
Downland SG-1000 Day 10: Reworked the rom layout so that banks 0,1 combined is under 16k. This should make the code ready for Colecovision. Now just waiting for a certain things to happen :) #downland #tandy #coco #sega #sg1000 #devkitsms
October 17, 2025 at 11:20 PM
sverx.mastodon.gamedev.place.ap.brid.gy
@tursilion sorry to bother you again - I'm trying to improve devkitSMS/SGlib (tools and SG-1000 C library) to support ColecoVision too.

I have found a good deal of information about the CV memory and I/O maps and other various details so I got to the point where I can create a working ROM […]
Original post on mastodon.gamedev.place
mastodon.gamedev.place
October 16, 2025 at 9:10 AM
pw32x.bsky.social
Downland for Game Gear Day 2, con't: adjusted the title screen to better fit the screen. No room for the room geometry, though. It's all offscreen. Next I'm gonna make the drops fall through the letters instead of colliding with them. #downland #tandy #coco #sega #gamegear #devkitsms
October 14, 2025 at 3:24 AM
pw32x.bsky.social
Downland for Game Gear Day 2: changed the timer and lives markers to be sprites. The lives display has been simplified to reduce flicker. Gotta fix bugs with scrolling when changing screens. Also, this game can be brutal. #downland #tandy #coco #sega #gamegear #devkitsms
October 13, 2025 at 6:50 PM
pw32x.bsky.social
Downland for Game Gear Day 1 con't: Added basic scrolling. Tiny screen is still tiny. Lives, time, and score can't clearly be seen. I will remove the top and bottom except the time, and display that with sprites in a corner. #downland #tandy #coco #sega #gamegear #devkitsms
October 12, 2025 at 10:50 PM
pw32x.bsky.social
Ugh, fine. Might as well...
Downland for Game Gear Day 1: Made a common game code folder for 8bit machines. Migrated SG-1000 and SMS to it. Created GG project. Updated makefile and game colors. The screen is tiny! #downland #tandy #coco #sega #gamegear #devkitsms
October 12, 2025 at 5:20 PM
pw32x.bsky.social
Downland for SG-1000 Day 9 con't: Got ram usage down under 1k and so reenabled 2 player mode. Thanks to the original author for his foresight. I was being silly taking too much memory while his original solution had already solved the problem :) #downland #tandy #coco #sega #sg1000 #devkitsms
October 12, 2025 at 3:10 AM
pw32x.bsky.social
Downland for SG-1000 Day 8&9: Finally got sprite drawing working. Reworked the obj gfx, toned down the player to be more like the original. Making 1bpp graphics is hard. I think I'm almost done with this version. #downland #tandy #coco #sega #sg1000 #devkitsms
October 11, 2025 at 11:47 PM
pw32x.bsky.social
Downland for SG-1000 Day 7: More boring drudgery trying to properly get the sprite graphics into the game. It would go faster if I would be less tired and could concentrate more on it. But still, some progress. #downland #tandy #coco #sega #sg1000 #devkitsms
October 10, 2025 at 2:59 AM
pw32x.bsky.social
Downland for SG-1000 Day 6: Just boring drudgery, getting a 1bpp png to C array tool going to convert the graphics. Tweaked sprites some more. Just about ready to test them out in-game. #downland #tandy #coco #sega #sg1000 #devkitsms
October 9, 2025 at 3:03 AM
pw32x.bsky.social
Downland for SG-1000 Day 5: Still working on the new player sprite. I realized that the black areas from yesterday's version are transparent. Reworked to have less transparency and I think it has a bit more personality now. #downland #tandy #coco #sega #sg1000 #devkitsms
October 8, 2025 at 2:50 AM
pw32x.bsky.social
Downland for SG-1000 Day 4: Reworking the object graphics for 1bpp sprites. I can't use the original 1bpp ones because they're made in such a way that they assume CRT artifact effects to produce colors. #downland #tandy #coco #sega #sg1000 #devkitsms
October 7, 2025 at 2:18 AM
pw32x.bsky.social
Downland for SG-1000 Day 3, Con't: Fixed the background colors and in-game text, plus started on importing the sprites. Currently getting them wrong. #downland #tandy #coco #sega #sg1000 #devkitsms
October 6, 2025 at 2:25 AM
pw32x.bsky.social
Downland for SG-1000 Day 3: Drawing background graphics (with no color set for ropes yet) and drops (with temp sprite and no flicker management). Screen transition + joystick + sound + banking work, which is nice. #downland #tandy #coco #sega #sg1000 #devkitsms
October 5, 2025 at 4:32 PM
pw32x.bsky.social
Downland for SG-1000 Day 2 Con't: Experimenting with the video mode and tile/sprites functions. Made some graphics! Wheee!!! #downland #tandy #coco #sega #sg1000 #devkitsms #wheeee
October 5, 2025 at 3:43 AM
pw32x.bsky.social
Downland for SG-1000 Day 2: Apparently SG-1000 carts can do bank switching so I copied the whole SMS project over, tweaked the makefile and stubbed the gfx calls. Cut the 2nd player 'cause of ram limits but the project builds and runs in a blank screen #downland #tandy #coco #sega #sg1000 #devkitsms
October 4, 2025 at 11:35 PM