Gradius V (グラディウスV)
Settings: Score Attack (default difficulty)
Edit: This run is no longer my best hi-score, check out the following video for my new high score:
http://www.youtube.com/watch?v=ra-X6L2kLT4
This was played on a real PS2 in a single, continuous run with absolutely no pausing. I get the game over at loop 4, stage 5, with a final score of 8,127,830.
00:00 - Start
1-1: 00:30 | 1-2: 04:51 | 1-3: 12:02 | 1-4: 20:17
1-5: 27:57 | 1-6: 32:53 | 1-7: 42:49 | 1-8: 55:25
2-1: 1:04:54 | 2-2: 1:10:05 | 2-3: 1:17:16 | 2-4: 1:25:59
2-5: 1:33:37 | 2-6: 1:38:37 | 2-7: 1:48:37 | 2-8: 2:01:14
3-1: 2:10:44 | 3-2: 2:16:14 | 3-3: 2:23:40 | 3-4: 2:32:25
3-5: 2:40:07 | 3-6: 2:45:36 | 3-7: 2:55:45 | 3-8: 3:08:34
4-1: 3:18:02 | 4-2: 3:23:58 | 4-3: 3:31:56 | 4-4: 3:40:44
4-5: 3:48:22