Out, Odd One!

The Odd Ones are coming! Use your sword (Left Mouse Button/Enter) to slice up anyone who looks Odd, but don't attack anybody who is Even...

My record is Wave 21, can you beat that?

Post-Jam build:
Thanks to everyone who voted, this game actually won Trijam!! To celebrate, here's a patch I made so quickly that it technically still fits within the 3 hour time limit:

• Changed the minus symbol to not look like a fraction
• Made sword hitbox bigger on the right
  

Credits
Made in 3 hours for Trijam
Design by Neopolis
Programming by Neopolis in Godot 4
Graphics by Neopolis in Aseprite
Slash and game over audio by Neopolis in Bfxr
Countdown sound by qubodup (CC-BY-3.0)
https://opengameart.org/content/countdown
Wave and fail sound effects from Kenney Asset Pack
Crimson Palette by WildLeoKnight https://lospec.com/palette-list/crimson
Font m5x7 by Daniel Linssen/managore