Monster RPG
Legacy
Monster RPG is running on life support kind of now. On Windows it uses DirectX 7 which isn't native anymore, and on Linux it uses dated libraries like xdga (x direct software rendering) and OSS (the original, now obsolete sound protocol on Linux.)
Engine
Monster RPG has its own unique engine based on a legacy version of the Allegro game library (version 4.) The code was reused from one of our abandoned games called Star Squatters.