Ultisquash is a combination of ultimate,
half-court basketball and hotbox
It's a fun, fast‐paced game played on a squash court. Score a point when you catch the disc while inside one of the services boxes. After a score or a turnover, clear the disc off the back wall. First team to seven points wins.
The game was originally played on the old-style courts (today's doubles courts). On new courts, the larger service boxes may make scoring too easy. But if that's all you have, then make do.
Choose teams in advance, or flip for them to start the game (first 3 people to flip heads are on one team). You can play 2v2 or 4v4, but the former is very tiring and the latter feels too cramped.
Like ultimate, your first point of contact with the floor after catching the disc must be inside the service box. The lines are out. Jumping off the wall is allowed.
The disc must be "cleared" off the back wall after each goal, each turnover, and at the start of the game. You can can clear the disc by touching the disc to the back wall or by catching a pass off the back wall.
If your team has 7 points and the other team has 5 or less, you win. If they have 6, keep playing until one team is winning by 2. If any team gets to 9 points, they win regardless of other team's score.
If you don't throw the disc within 5 seconds of catching it, it is a turnover. You cannot stall unless you are close enough to touch the thrower.
Boxing out, bodying up, close marks and other contact is allowed. There are no pick calls, but don't set picks on purpose. Only call a foul if it is egregious (e.g. really hard shoves, strips, hitting your hands as you catch the disc, etc)
If the disc hits the walls or the ceiling, keep playing. You can throw it off the walls on purpose if you'd like. Hitting the floor, however, is a turnover.