OVO-2.7 is an open-source simulation framework for simulating natural systems in two dimensions. It is a part of the Teko suite of software tools and is developed in Java. It includes components to simulate physical properties such as gravity, temperature, and pressure, in addition to including some basic artificial intelligence algorithms for simulating decision-making and behaviour. OVO-2.7 also allows for the simulation of terrain, 3D terrains, vegetation, fires, and other environmental factors. Additionally, it is equipped with a graphical user interface for setting up and running the simulations.