63 is a Gothic 2 modification. It consists of 63 waves of enemies in version 1.0 (60 in 1.1). Every wave consists of 10 enemies that grow stronger while the player has to kill them. Several classes and maps can be played.
Project lead and all the scripting was done by Daniel Bonrath, while he had help for sound and 3D work from other community members.
Download is available via Spine.