| Slot Machine |  Moo Moo Paradise | 2003 | Create21 |
| Slot Machine | Mountain King | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Mr. Boss | 2003 | Subsino Co., Ltd. |
| Slot Machine | Multi-Card Keno | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Mystical Sea World Model WMH-208SW | 2003 | Paokai Electronic Enterprise Co., Ltd. Taiwan |
| Slot Machine | Neptune's Fortune | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Neptune's Kingdom | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Neptune's Treasure | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | New Champ Champ | 2003 | Gamma Soft. |
| Slot Machine | New Mustang | 2003 | Unknown Korea |
| Slot Machine | Niagara Gold Progressive | 2003 | Bally Gaming, Inc. Las Vegas, NV, USA |
| Slot Machine | Night & Day | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Odysseus | 2003 | MasterGames |
| Slot Machine | Oil Company | 2003 | EGT Euro Games Technology, Ltd. Bulgaria |
| Slot Machine | Oktoberfest | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Old Glory | 2003 | Cadillac Jack Duluth, GA, USA |
| Slot Machine | Open the Vault | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Orca Classics | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Pan | 2003 | Mega |
| Slot Machine | Pegasus | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Pelican Pays | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Pizza the Action | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Platinum Pays | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Playboy Progressive | 2003 | Bally Gaming, Inc. Las Vegas, NV, USA |
| Slot Machine | Pleasure | 2003 | Subsino Co., Ltd. |
| Slot Machine | Plumeria | 2003 | Niigata Denshi Japan |
| Slot Machine | Poker Mania | 2003 | Andamiro Co., Ltd. |
| Slot Machine | Polar Adventure | 2003 | Aruze Corp. Japan |
| Slot Machine | Population Explosion | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Powerbucks | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Premier Poker | 2003 | ETP Korea |
| Slot Machine | Prime Slot | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Prize Circle | 2003 | WMS Gaming, Inc. Chicago, IL, USA |
| Slot Machine | Pure Gold | 2003 | Sammy Corp. Japan |
| Slot Machine | Purple Passion 3-Coin Multiplier | 2003 | IGT International Game Technologies Reno, NV, USA |
| Slot Machine | Quattro! The Great | 2003 | Konami Gaming, Inc. Las Vegas, NV, USA |
| Slot Machine | Queen of Atlantis | 2003 | Aristocrat Leisure Industries Pty, Ltd. |
| Slot Machine | Queen of Hearts | 2003 | AGI Austrian Gaming Industries Novomatic Group |
| Slot Machine | Raining Hearts | 2003 | Stargames, Ltd. Australia |
| Slot Machine | Rapid Repeat Poker | 2003 | Konami Gaming, Inc. Las Vegas, NV, USA |
