| Slot Machine |  Arizona Night Train | 200? | Maquinas Automaticas Computerizadas, S.A. |
| Slot Machine | Ark Royal Mighty Galleons | 200? | Bally Tech., Inc. |
| Slot Machine | Armada Gold | 2006 | Orion Gaming |
| Slot Machine | Armada Gold Fish 2 | 2009 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Armadillo Artie | 2013 | AGI Austrian Gaming Industries Novomatic Group |
| Slot Machine | Arnold's Diner Happy Days | 2009 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Around the Board Premium Plus | 201? | Ainsworth Game Technology, Ltd. |
| Slot Machine | Around the Globe | 2009 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Arowana | 2005 | Subsino Co., Ltd. |
| Slot Machine | Arriva Arriva | 200? | Apex Gaming Technology GmbH Austria |
| Slot Machine | Arrow | 1892 | Amusement Machine Co. New York, NY, USA |
| Slot Machine | Arrow Alaska | 1897 | Schall & Co., D.N. Chicago, IL, USA |
| Slot Machine | Arrow Bell | 1949 | Universal Industries, Inc. Chicago, IL, USA |
| Slot Machine | Arrow Head | 19?? | Mills Novelty Co. Chicago, IL, USA |
| Slot Machine | Arrow-Line Model 883-1 | 1970 | Bally Mfg. Co. Chicago, IL, USA |
| Slot Machine | Arrow-Line Model 883 | 1970 | Bally Mfg. Co. Chicago, IL, USA |
| Slot Machine | Artemide Roulette | 200? | Professional Games Srl Italy |
| Slot Machine | ARTEMISA-4382-IWR | 200? | Unidesa Universal de Desarrollos Electronicos |
| Slot Machine | Arthur's Knights | 200? | LGT Co., Ltd. |
| Slot Machine | Arthur's Quest | 2005 | Konami Corp. Japan |
| Slot Machine | Artic Adventure | 2012 | Magic Dreams |
| Slot Machine | Artic Treasure | 2009 | Videobet Estonia |
| Slot Machine | Artico | 2010 | Magic Dreams |
| Slot Machine | As | 1989 | Mega |
| Slot Machine | As Good as Gold | 2004 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | As Good as Gold | 2010 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | As You Wish | 200? | Konami Industry Co., Ltd. Japan |
| Slot Machine | Asante Queen | 2006 | Konami Gaming, Inc. Las Vegas, NV, USA |
| Slot Machine | Ascot | 196? | SEGA Enterprises, Ltd. Tokyo, Japan |
| Slot Machine | Ascot Race | 198? | Shoei Co., Ltd. |
| Slot Machine | Ascot Race | 1975 | Nihon Bending Hanbai Japan |
| Slot Machine | Ascot Super De Luxe | 1963 | Unknown |
| Slot Machine | Ashanti Queen | 2003 | Konami Corp. Japan |
| Slot Machine | Ashes to Cashes | 2004 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Asian Ball Tour Model MA461E | 200? | Progame Electronic Corp. Taiwan |
| Slot Machine | Asian Beauties | 2013 | Bally Tech., Inc. |
| Slot Machine | Asian Charm | 2013 | Magic Dreams |
| Slot Machine | Asian Delignts | 2007 | Unicum Gaming |
| Slot Machine | Asian Queen | 2006 | Orion Gaming |
| Slot Machine | Asian Spirit | 200? | ADP Merkur GmbH Gauselmann Group Germany |
