Proto

Proto is a set of snappable models designed to make prototyping levels as easy as possible!
Proto comes with 75 different low polygon models design to fit flush with each other, leaving no room for any error!
Not only does it include a lot of models for you to use, it also contains a handy editor, which lets you interactively turn snapping on and off for objects as well as globally setting materials for all types of objects.
Features
75 different models to use, from floors, ceilings, stairs, ramps and miscellaneous video game items!
All 75 items are design to snap flush together under any circumstance
Custom editor gizmo for quick rotation and snapping to the floor
Custom automatic in editor snapping for all objects in the scene
Proto comes with a small example level to see how you can quickly build up levels.