Screamer 4x4 is a 4x4 off-road game, designed by Hungarian-based Clever's Interactive. It is still considered by many to be the most realistic off-road trials driving simulator despite showing its age. The game makes use of graphics hardware acceleration, allowing to choose between Glide, Direct3D and OpenGL renderers.Unlike nearly all other off-roading games, the emphasis is not on racing but on passing through checkpoints laid out at specific points in such a way that the player is forced to navigate difficult terrain. Other modes are available as well, such as Pathfinder, which gives only a handful of checkpoints spread out over the terrain and leaves it up to the player to decide how to reach each one (although each must still be passed in a predetermined order). Penalties are given in all modes for hitting checkpoint markers and for using the recovery service to flip an overturned vehicle, and you are immediately disqualified for hitting any bystanders.