Clifty is a NUMA user known for making extremely popular DDAs.
Since DDAs generally fetch a higher vote-to-map ratio than action, race, or puzzle maps, Clifty has the highest vote-to-map ratio of any user on NUMA, with about 99.22 votes per map. All of his 24 maps are rated and bitesized. His most popular map is On Route 666.
Clifty is widely believed to have temporarily retired from mapmaking. However, he constantly idles on IRC and talks periodically.