General competition rules

• All entries must be uploaded in .d64 or .prg format before the final deadline
• Each entry must run on a stock C64 with any 1541 compatible drive and with/without a cartridge attached (like AR6 or Retro Replay)
• Specify which SID you want your entry to be played on, we support both the old (6581) and new (8580) SID
• All entries will be released at the party
• All entries or parts of it may not have been released prior to the competitions
• All entries will be displayed as-is, tags are allowed, the competitions are not anonymous
• One entry per person or group, per compo
• The organizers reserve the right to disqualify any entry
• If it looks like you're going to miss the deadline by a bit, please talk to Burglar asap. But please do your utmost best to submit your entry well before the deadline!
• No remote entries
• We will be using a 1541-Ultimate to display entries
• Captures/videos will be shown for the C64 Extended Compo

Compo specifics

Demo

• Submit entry as (multiple) .d64 images or as .prg if you want to be eligible for the Onefile Award
• BASIC entries are not allowed
• Specify 6581 or 8580 SID chip
• Individuals may contribute to multiple entries
• Please use a loader that is not picky about which drive wrote the disk
• Multidisk: please add a bootfile on each diskside
• Pro tip: when you submit your entry, share the duration of the demo or another way for us to know when the demo is over in the private comment field

Onefile Demo

• Submit your entry as .prg only (or a .prg inside a d64, which we'll copy)
• Your entry must start at $0801 with a basic start and may not exceed $cfff (202 blocks max size)
• Obviously all memory may be used during execution

4K

• Submit your entry as .prg only (or a .prg inside a d64, which we'll copy)
• Filesize may not exceed 4096 bytes, including load address
• Your entry must start at $0801 with a basic start and may not exceed $17ff
• Obviously all memory may be used during execution
• Specify 6581 or 8580 SID chip

Music

• Submit entry as .prg only (or a .prg inside a d64, that we will copy), has a basic start at $0801 and may not exceed $cfff
• All entries will be played max 3 minutes, we may cut it short if we believe it's looping. Pro tip: tell us the playing time when you submit your entry
• Specify 6581 or 8580 SID chip
• 2SIDs are not allowed

Graphics

• Submit entry as .prg only (or a .prg inside a d64, that we will copy), has a basic start at $0801 and may not exceed $cfff
• All entries will be shown for 20 seconds
• All regular graphics formats are allowed
• Animations are not allowed
• Interlace, sprites, borders, rasterbars are allowed, please specify what you used when you submit your entry, so the information will be available in the voting system
• Respect your fellow artists, please do not wire or use AI
• Uploading workstages is encouraged, the zip file will be published in Votox during the competition

PETSCII

• Submit entry as .prg only (or a .prg inside a d64, that we will copy), has a basic start at $0801 and may not exceed $cfff
• All entries will be shown for 20 seconds
• Adhere to 100% PETSCII specs: use the lower OR the uppercase ROM charset, you are not allowed to use any other chars
• Use any fixed background color and use a fixed colormap ($d800)
• Animations, interlace, sprites and effects are not allowed
• Respect your fellow artists, please do not wire or use AI

C64 Extended

The C64 Extended Competition is a brand new compo for C64 related productions that do not fit in the other categories due to hardware constraints. It's a bit like a Wild Compo, but focused around the C64 itself.

In this compo, all C64 extensions are welcome: official, unofficial, homemade, you name it. Aslong as the core remains the C64 and/or 1541 (Freespin would qualify of course, as well as The Qweremin).

The Ultimate64/C64 Ultimate, its 48MHz and the Turbo Chameleon 64 are explicitely allowed in this competition.

IMPORTANT: Creators must supply a recording of their entry!

Check this CSDb thread if you're interested in the background and discussion about this compo.
If you are unsure if your entry meets the bar, feel free to contact us before the party.

• The stock C64 or the Ultimate64/C64 Ultimate must be used
• All C64 extensions are allowed, such as: REU, 2SID, FM-Yam, Easyflash, SuperCPU, TC64, etc
• All types of C64 storage devices/enhancements are allowed, such as .d64, .d81, .crt, CMD devices, TapeCart, parallel cable, DOS/ROM/RAM enhancements, etc
• Turbo modes are allowed (2 to 64MHz)
• Interfacing with other devices is allowed
• Submit entry as .prg, .d64, or .zip file containing required files for release
• Deliver a video or a 50Hz capture of your entry running on real hardware in standard digital format
• Please be willing to show your entry to visitors at the party on real hardware

Voting system & compo hardware

Vote live from your device as the battles unfold. The voting portal stays open long after the last pixel dazzles and SID tone fades to check out the scores. True to our roots, we're running the showdown on classic C64s, so prep your entries for a seamless nostalgic ride. Get ready to cast your vote and make your mark in C64 history!

NOTE: We're keeping it nice and real with two classic C64s for the competition—one rocking a 6581 SID and the other an 8580 SID. Entries will strut their stuff on a 1541 Ultimate setup, complete with AR6 or RetroReplay. Make sure your masterpiece is tuned to this vintage vibe for a smooth showcase. Get ready to impress on the classic hardware that started it all!