In a bullet format, it's quite feasible to include a very large number of engines.
CCC9 Sugestion: Bullet Challenge (1+2)
After Stage 1, top 20 engines advance in Stage 2, where the engines will play each other 6 times.
Top 10 engines in Stage 2, will advance in Stage 3, where the engines will play each other 8 times.
Top 4 engines in Stage 3 will play a Superfinal. The engines are playing each other 200 times.
Hi! I want to make a CCC suggestion: a bullet tournament named Bullet Challenge with 1+2 time control and with the following participants:
1.Lc0
2.Stockfish
3.Houdini
4.Komodo
5.Leelastein
6.Antifish
7.Komodo MC
8.Ethereal
9.Fire
10.Fritz
11.Booot
12.Texel
13.Xiphos
14.Fizbo
15.Andscacs
16.Wasp
17.BlackMamba
18.Gull
19.Critter
20.Crafty
21.Laser
22.ScorpioNN
23.Alfilx64
24.BetaOne (https://www.patreon.com/BetaOne )
25.Senpai
26.Bobcat
27.Arasan
28.Shredder
29.Allie
30.Rofchade
31.Equinox
32.Hiarcs
33.Jonny
34.Deep Junior
35.ChessBrain VB
36.Naum
Round Robin format, the engines are playing each other 4 times
(If there are too many engines, you can quit some of them)