For the last few years I've been working on Gigalomania ( http://freecode.com/projects/gigalomania ), which is a Mega Lo Mania clone - some of you may remember the game from the early '90s. For those that don't, it's a simple 2D RTS game where you can advance through the ages. My game is playable, but it's in dire need of better graphics :)
It's available for Windows, OS X and Linux PCs, as well as Symbian, Android*, Maemo and Meego smartphones/tablets.
I've already had someone improve some of the graphical icons. I've also added in some free graphics, including some sourced from Open Game Art - see http://homepage.ntlworld.com/mark.harman/comp_gigalomania.html#licences for a full list.
If anyone wants to help out, that would be greatly appreciated? In particular, improved graphics/animations for the sprites of all the soldiers (currently attackers only have 3 frames in one direction, but I can change the code to support more - it would make sense to have 4 directions, for example). Also note that a lot of the graphics use a color key for transparency and shadow effect, but th game supports loading images with alpha channels, which would be the better way of doing things.
Many of the icons could also do with replacing - e.g., the "man" icon for each epoch, along with the icons for weapons and defences.
* I have had some reports of failing to work on some Android devices, which should be fixed now, but please let me know if you still have problems.