Attendance Project: XSL
When the second Major Indoor Soccer League pulled the plug on itself in the summer of 2008, some of its teams split off into the new National Indoor Soccer League and four formed the Xtreme Soccer League. When the XSL bit the dust after a year, the Milwaukee Wave (eventually) joined the NISL, while the Chicago Storm, New Jersey Ironmen and Detroit Ignition folded.
| Team | G | Total | Average |
| Milwaukee Wave | 10 | 45,634 | 4,563 |
| Detroit Ignition | 10 | 34,734 | 3,474 |
| New Jersey Ironmen | 10 | 30,511 | 3,051 |
| Chicago Storm | 10 | 26,500 | 2,650 |
| XSL TOTAL | 40 | 137,379 | 3,434 |