I develop a 2D open-source strategy game called Wyrmsun, which is inspired by old-school RTSes and strategy games. Here is a short description:

"Wyrmsun is an open-source RTS game which features elements of mythology, history and fiction.

In the Wyrmsun universe a myriad of inhabited planets exist. Humans dwell on Earth, while dwarves inhabit Nidavellir and elves nourish the world of Alfheim. These peoples struggle to carve a place for themselves with their tools of stone, bronze and iron. And perhaps one day they will meet one another, beyond the stars..."

You can read more about (and download) it here.

The project is in need of pixel artists who can make graphics that fit well with the graphics already in the game. Please note that the game's perspective is not isometric, but a tilted top-downish view. You can browse the game's graphical assets here.

If you would like to make graphics for the game, feel free to contact me! Please let me know what your rates are. Due to the game's open-source nature, any graphics made for the game would have to be licensed under the CC0 license. I look forward to hearing from you!