"I would show you a trick but the taxman stole my cards. What an uncivilized society!"
589 Entries
109 BotBrs
24 Formats
Here's how it works: Twenty-four 24HBs for the 24 days leading up to Christmas. Each day has its own format and bitpack, then a new one takes its place on the next day!
Formats and bitpack change at midnight (PST time zone). Be sure to check each day for formats you're interested in, and read the bitpack! Advent Calendar is also a great opportunity to try something new, you've got a whole day to figure out a format! Maybe some of you will even enter every day, and join the Hall of Completionists...
You can read more about this series here.
Also check out the previous battles:
- Advent Calendar 2024
- Advent Calendar 2023
- Advent Calendar 2022
- Advent Calendar 2021
- Advent Calendar 2020
This is basically a timezone-friendly XHB :D
That means that the average time you should put into an entry is 1 to 4 hours. You can obviously work a lot longer on your track if you want, but don't think you're forced to do this. The usual XHB rules apply: Your entry should be made within the day, please don't submit tracks you finished earlier, follow the rules or use the provided samples, depending on the bitpack type.
- warm sweaters • frigid winds • decorativity • chimney smoke • surprise in pants
- All registered users of BotB may vote.
- All tunes will be rendered to MP3 for voting accessibility.
- No covers allowed, only original works.
- Entries that have been previously publicly released are not allowed.
- While generative processes are permitted if designed by the entrant, they should never be used as a substitute for putting real human effort into your entries on BotB.
- For direct communication join us on IRC!! irc.esper.net #botb :D/
BotB_Advent_Calendar_2025_Day_1.txt
279 bytes with this they beganWaveTracker is a wavetable synthesis-focused tracker that also offers sampling capability. :: read lyceum article
Maximum File Size :: 12.5mb
29 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_2.txt
318 bytes with this they beganMusic for the Yamaha YM3812 chip, also known as the OPL2. Nine channels of 2-op FM with four waveforms. :: read lyceum article
Maximum File Size :: 12.5mb
35 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_3.txt
151 bytes with this they beganThe Roland MT-32 is a sound module that was released in 1987. A MIDI driven device from a time before MIDI was completely standardized. :: read lyceum article
Maximum File Size :: 12.5mb
31 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_4.it
142.0kb with this they began
Tracker Module file made by using samples!
files no larger than 49,152 bytes :: read lyceum article
Maximum File Size :: 48kb
38 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_5.txt
147 bytes with this they beganThe cover art format. must be a square image :: read lyceum article
Maximum File Size :: 750kb
39 entries submitted :: view entries
BotB_Advent_Calendar_2025_Day_6.txt
468 bytes with this they beganmust feature an original recording of instrument performance :: read lyceum article
Maximum File Size :: 12.5mb
28 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_7.txt
177 bytes with this they beganAn online sequencer for sketching and sharing chiptune melodies. :: read lyceum article
Maximum File Size :: 12.5mb
28 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_8.txt
382 bytes with this they began
Algorithms and math equations, that are used to produce sound. Submission requires: link to generator tool, sample playback rate, and algorithm(s)
files no larger than 1,024 bytes :: read lyceum article
Maximum File Size :: 1,024 bytes
29 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_9.txt
194 bytes with this they began
1bit beeper music - made for the Sinclair ZX Spectrum, controlled by the Z80 processor.
Submission should be able to play back on real hardware (or in an emulator)! :: read lyceum article
Maximum File Size :: 1,024kb
24 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_10.txt
222 bytes with this they beganAssets and/or visual artwork made in NEXXT, an editor for NES hardware-compatible graphics. :: read lyceum article
Maximum File Size :: 12.5mb
23 entries submitted :: view entries
BotB_Advent_Calendar_2025_Day_11.txt
173 bytes with this they begana piece of audio, that can be used as a sample for remix-purposes. must be original content! :: read lyceum article
Maximum File Size :: 2.5mb
34 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_12.zip
16.1mb with this they began
Submitted entries may only use audio sources from the provided bitpack
heavy cutting and effect usage encouraged :: read lyceum article
Maximum File Size :: 12.5mb
39 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_13.txt
255 bytes with this they beganProject file made in FamiStudio, the piano roll NES chiptune sequencer. Use the latest stable version! :: read lyceum article
Maximum File Size :: 12.5mb
18 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_14.txt
178 bytes with this they beganCustom quests for Zelda Classic (ZC), the Armageddon Games PC clone of the original NES Legend of Zelda. :: read lyceum article
Maximum File Size :: 12.5mb
11 entries submitted :: view entries
BotB_Advent_Calendar_2025_Day_15.txt
163 bytes with this they beganan original photograph created using a device with a lens known as a camera :: read lyceum article
Maximum File Size :: 12.5mb
23 entries submitted :: view entries
BotB_Advent_Calendar_2025_Day_16.txt
150 bytes with this they began
the best pants
Entry that is made in Mario Pants by using the F9 extended mode. :: read lyceum article
Maximum File Size :: 12.5mb
17 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_17.txt
201 bytes with this they beganHTML5 website allowing the use of your own JavaScript or CSS and their respective modern features! Your submitted .zip can also contain website assets such as images or audio files. :: read lyceum article
Maximum File Size :: 25mb
14 entries submitted :: view entries
BotB_Advent_Calendar_2025_Day_18.txt
313 bytes with this they began
Music made for the Yamaha YM2612 + SN76489 chips, featured in the Sega Genesis.
Submission should be able to play back on real hardware (or in an emulator)! :: read lyceum article
Maximum File Size :: 7.9mb
22 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_19.txt
161 bytes with this they beganSunVox is a semi-modular tracker for almost all devices, including mobile. :: read lyceum article
Maximum File Size :: 12.5mb
14 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_20.it
6.1mb with this they beganTracker Module file made by using samples. Using OPL-mode in .s3m is not allowed! :: read lyceum article
Maximum File Size :: 4.9mb
32 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_21.txt
169 bytes with this they beganMusic made for the AY-3-8910/YM2149 chip and one or more expansion chips that were featured in the MSX and its game/expansion carts. Allowed expansion chips: Y8950 OPLL SCC SCC+ and Turbo-R PCM :: read lyceum article
Maximum File Size :: 4mb
23 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_22.zip
6.3kb with this they beganpxtone is a sample based music editor from Studio Pixel of Cave Story fame. :: read lyceum article
Maximum File Size :: 12.5mb
10 entries submitted :: view entries :: listen entries
BotB_Advent_Calendar_2025_Day_23.txt
181 bytes with this they beganVisuals made using the ascii char set only. literature is not allowed! :: read lyceum article
Maximum File Size :: 16kb
12 entries submitted :: view entries
BotB_Advent_Calendar_2025_Day_24.txt
506 bytes with this they begantext/plain ascii utf-8 :: read lyceum article
Maximum File Size :: 12.5mb
16 entries submitted :: view entries
