Savage is an interesting sounding blend of RTS with a commander that has the overview over the game, while warriors have the first person view and might follow the commander's orders.
With the creation of a new game play genre, RTSS (Real Time Strategy Shooter), Savage expertly redefines the first-person shooter and real-time strategy genres by combining elements of both into one cohesive experience. As the commander in RTS mode, you will tackle resource management, develop a robust tech tree, plan your assault and lead real human players into battle. As a warrior in action mode, you will master many unique weapons, powerful units, and siege vehicles to fight a fast paced battle.
Cantr II is a text-based MMORPG intended to simulate a society, while still having some roleplaying aspects. Apparently, it is currently down, though.
Super Meat Boy – is supposed to have tight level design that continually adds new elements, just like World of Goo did.
Speedball for Amiga by the Bitmap Brothers was famous for its graphics and its violence (you could push your opponent!). It will be re-released for the iPhone (apparently? Maybe I misheard).
See what I did there? ↩