Flea Madness, currently in development by Priple is a fast-paced multiplayer action game that looks good and the idea sounds pretty amusing too.
Each player assumes the role of an alien flea, a biological weapon with a singular purpose—eat everything. As you hunt and eat others, you evolve into a more dangerous creature too. Spread across the maps, you will find insects to eat, which will also give you various abilities although not all of them good for you. Some might speed you up, turn you invisible or reverse your controls.
You can see some early work in progress footage of it below:
Super weird but they have a fun looking idea, the graphical style is pretty sweet too, very unusual looking scenery which is another part I liked.
After coming across it, I asked about Linux support. The reply was very positive and a super clear "Yes sure, we will have Linux version of our game.".
You can wishlist/follow it on Steam.