Octopus engine is a fast paced rts engine in c++ It is a fully deterministic engine that allow fast rollback to reduce latency Still under heavy development.
Fair and Square is a small roguelike and fast-paced RTS using Octopus Engine.
Dwarves endeavour is a small survival RTS where you control a dwarf hero and need to build your city to train troops to survive against more and more shadows coming to you.