RAMPS
| Date | Clue |
|---|---|
| 2025-12-24 | Wheelchair access paths |
| 2017-03-17 | Flight alternatives |
| 2016-11-15 | Stadium walkways |
| 2016-08-24 | Skatepark features |
| 2009-07-27 | Highway entrances and exits, typically |
| 2008-09-02 | Accelerates, with "up" |
| 2008-07-19 | Some pinball targets |
| 2006-03-04 | Level connectors |
| 2004-10-19 | Stadium walkways |
| 2004-05-07 | Level connections |
| 2004-03-24 | Ways off |
| 2004-01-30 | Level connectors |
| 2003-09-16 | Wheelchair-accessible routes |
| 2000-09-27 | Hospital egresses |
| 2000-07-30 | Stadium walkways |
| 1999-08-02 | Highway exits |
| 1999-02-22 | Wheelchair-accessible routes |
| 1998-08-27 | Parts of cloverleafs |
| 1997-02-05 | Parking garage features |
| 1995-04-13 | Movers' equipment |
| 1994-08-24 | Plane egresses |
| 1994-06-29 | On/off routes |