C984-A467 Infinite climbers if you start with at least 1
C98F-AD07 Infinite floaters if you start with at least 1
C987-A407 Infinite bombers if you start with at least 1
C984-6DA7 Infinite blockers if you start with at least 1 
C98E-6D07 Infinite builders if you start with at least 1
C982-6FD7 Infinite bashers if you start with at least 1
C981-67D7 Infinite miners if you start with at least 1
C98B-64A7 Infinite diggers if you start with at least 1
31B6-6FAF + 18B6-64DF Each saved lemming counts as two

For the rest of the codes, the select key can't be used to change levels or ratings.

CBCC-DD05 + DFCC-DD65 + C9C8-0FD5 Start on Level 2; rating: Fun
CBCC-DD05 + D4CC-DD65 + C9C8-0FD5 Start on Level 3; rating: Fun
CBCC-DD05 + D7CC-DD65 + C9C8-0FD5 Start on Level 4; rating: Fun
CBCC-DD05 + D0CC-DD65 + C9C8-0FD5 Start on Level 5; rating: Fun
CBCC-DD05 + D9CC-DD65 + C9C8-0FD5 Start on Level 6; rating: Fun
CBCC-DD05 + D1CC-DD65 + C9C8-0FD5 Start on Level 7; rating: Fun
CBCC-DD05 + D5CC-DD65 + C9C8-0FD5 Start on Level 8; rating: Fun
CBCC-DD05 + D6CC-DD65 + C9C8-0FD5 Start on Level 9; rating: Fun
CBCC-DD05 + DBCC-DD65 + C9C8-0FD5 Start on Level 10; rating: Fun
CBCC-DD05 + DCCC-DD65 + C9C8-0FD5 Start on Level 11; rating: Fun
CBCC-DD05 + D8CC-DD65 + C9C8-0FD5 Start on Level 12; rating: Fun
CBCC-DD05 + DACC-DD65 + C9C8-0FD5 Start on Level 13; rating: Fun
CBCC-DD05 + D2CC-DD65 + C9C8-0FD5 Start on Level 14; rating: Fun
CBCC-DD05 + D3CC-DD65 + C9C8-0FD5 Start on Level 15; rating: Fun
CBCC-DD05 + DECC-DD65 + C9C8-0FD5 Start on Level 16; rating: Fun
CBCC-DD05 + FDCC-DD65 + C9C8-0FD5 Start on Level 17; rating: Fun 
CBCC-DD05 + FFCC-DD65 + C9C8-0FD5 Start on Level 18; rating: Fun
CBCC-DD05 + F4CC-DD65 + C9C8-0FD5 Start on Level 19; rating: Fun
CBCC-DD05 + F7CC-DD65 + C9C8-0FD5 Start on Level 20; rating: Fun
CBCC-DD05 + F0CC-DD65 + C9C8-0FD5 Start on Level 21; rating: Fun
CBCC-DD05 + F9CC-DD65 + C9C8-0FD5 Start on Level 22; rating: Fun
CBCC-DD05 + F1CC-DD65 + C9C8-0FD5 Start on Level 23; rating: Fun
CBCC-DD05 + F5CC-DD65 + C9C8-0FD5 Start on Level 24; rating: Fun
CBCC-DD05 + F6CC-DD65 + C9C8-0FD5 Start on Level 25; rating: Fun
CBCC-DD05 + FBCC-DD65 + C9C8-0FD5 Start on Level 26; rating: Fun
CBCC-DD05 + FCCC-DD65 + C9C8-0FD5 Start on Level 27; rating: Fun
CBCC-DD05 + F8CC-DD65 + C9C8-0FD5 Start on Level 28; rating: Fun
CBCC-DD05 + FACC-DD65 + C9C8-0FD5 Start on Level 29; rating: Fun
CBCC-DD05 + F2CC-DD65 + C9C8-0FD5 Start on Level 30; rating: Fun
CBCC-DD05 + F3CC-DD65 + C9C8-0FD5 Start on Level 1; rating: Tricky
CBCC-DD05 + FECC-DD65 + C9C8-0FD5 Start on Level 2; rating: Tricky
CBCC-DD05 + 4DCC-DD65 + C9C8-0FD5 Start on Level 3; rating: Tricky
CBCC-DD05 + 4FCC-DD65 + C9C8-0FD5 Start on Level 4; rating: Tricky 
CBCC-DD05 + 44CC-DD65 + C9C8-0FD5 Start on Level 5; rating: Tricky
CBCC-DD05 + 47CC-DD65 + C9C8-0FD5 Start on Level 6; rating: Tricky
CBCC-DD05 + 40CC-DD65 + C9C8-0FD5 Start on Level 7; rating: Tricky
CBCC-DD05 + 49CC-DD65 + C9C8-0FD5 Start on Level 8; rating: Tricky
CBCC-DD05 + 41CC-DD65 + C9C8-0FD5 Start on Level 9; rating: Tricky
CBCC-DD05 + 45CC-DD65 + C9C8-0FD5 Start on Level 10; rating: Tricky
CBCC-DD05 + 46CC-DD65 + C9C8-0FD5 Start on Level 11; rating: Tricky
CBCC-DD05 + 4BCC-DD65 + C9C8-0FD5 Start on Level 12; rating: Tricky
CBCC-DD05 + 4CCC-DD65 + C9C8-0FD5 Start on Level 13; rating: Tricky
CBCC-DD05 + 48CC-DD65 + C9C8-0FD5 Start on Level 14; rating: Tricky
CBCC-DD05 + 4ACC-DD65 + C9C8-0FD5 Start on Level 15; rating: Tricky
CBCC-DD05 + 42CC-DD65 + C9C8-0FD5 Start on Level 16; rating: Tricky
CBCC-DD05 + 43CC-DD65 + C9C8-0FD5 Start on Level 17; rating: Tricky
CBCC-DD05 + 4ECC-DD65 + C9C8-0FD5 Start on Level 18; rating: Tricky
CBCC-DD05 + 7DCC-DD65 + C9C8-0FD5 Start on Level 19; rating: Tricky
CBCC-DD05 + 7FCC-DD65 + C9C8-0FD5 Start on Level 20; rating: Tricky
CBCC-DD05 + 74CC-DD65 + C9C8-0FD5 Start on Level 21; rating: Tricky
CBCC-DD05 + 77CC-DD65 + C9C8-0FD5 Start on Level 22; rating: Tricky
CBCC-DD05 + 70CC-DD65 + C9C8-0FD5 Start on Level 23; rating: Tricky
CBCC-DD05 + 79CC-DD65 + C9C8-0FD5 Start on Level 24; rating: Tricky
CBCC-DD05 + 71CC-DD65 + C9C8-0FD5 Start on Level 25; rating: Tricky
CBCC-DD05 + 75CC-DD65 + C9C8-0FD5 Start on Level 26; rating: Tricky
CBCC-DD05 + 76CC-DD65 + C9C8-0FD5 Start on Level 27; rating: Tricky
CBCC-DD05 + 7BCC-DD65 + C9C8-0FD5 Start on Level 28; rating: Tricky
CBCC-DD05 + 7CCC-DD65 + C9C8-0FD5 Start on Level 29; rating: Tricky
CBCC-DD05 + 78CC-DD65 + C9C8-0FD5 Start on Level 30; rating: Tricky
CBCC-DD05 + 7ACC-DD65 + C9C8-0FD5 Start on Level 1; rating: Taxing
CBCC-DD05 + 72CC-DD65 + C9C8-0FD5 Start on Level 2; rating: Taxing 
CBCC-DD05 + 73CC-DD65 + C9C8-0FD5 Start on Level 3; rating: Taxing
CBCC-DD05 + 7ECC-DD65 + C9C8-0FD5 Start on Level 4; rating: Taxing
CBCC-DD05 + 0DCC-DD65 + C9C8-0FD5 Start on Level 5; rating: Taxing
CBCC-DD05 + 0FCC-DD65 + C9C8-0FD5 Start on Level 6; rating: Taxing
CBCC-DD05 + 04CC-DD65 + C9C8-0FD5 Start on Level 7; rating: Taxing
CBCC-DD05 + 07CC-DD65 + C9C8-0FD5 Start on Level 8; rating: Taxing
CBCC-DD05 + 00CC-DD65 + C9C8-0FD5 Start on Level 9; rating: Taxing
CBCC-DD05 + 09CC-DD65 + C9C8-0FD5 Start on Level 10; rating: Taxing
CBCC-DD05 + 01CC-DD65 + C9C8-0FD5 Start on Level 11; rating: Taxing
CBCC-DD05 + 05CC-DD65 + C9C8-0FD5 Start on Level 12; rating: Taxing
CBCC-DD05 + 06CC-DD65 + C9C8-0FD5 Start on Level 13; rating: Taxing
CBCC-DD05 + 0BCC-DD65 + C9C8-0FD5 Start on Level 14; rating: Taxing
CBCC-DD05 + 0CCC-DD65 + C9C8-0FD5 Start on Level 15; rating: Taxing
CBCC-DD05 + 08CC-DD65 + C9C8-0FD5 Start on Level 16; rating: Taxing
CBCC-DD05 + 0ACC-DD65 + C9C8-0FD5 Start on Level 17; rating: Taxing
CBCC-DD05 + 02CC-DD65 + C9C8-0FD5 Start on Level 18; rating: Taxing
CBCC-DD05 + 03CC-DD65 + C9C8-0FD5 Start on Level 19; rating: Taxing 
CBCC-DD05 + 0ECC-DD65 + C9C8-0FD5 Start on Level 20; rating: Taxing
CBCC-DD05 + 9DCC-DD65 + C9C8-0FD5 Start on Level 21; rating: Taxing
CBCC-DD05 + 9FCC-DD65 + C9C8-0FD5 Start on Level 22; rating: Taxing
CBCC-DD05 + 94CC-DD65 + C9C8-0FD5 Start on Level 23; rating: Taxing
CBCC-DD05 + 97CC-DD65 + C9C8-0FD5 Start on Level 24; rating: Taxing
CBCC-DD05 + 90CC-DD65 + C9C8-0FD5 Start on Level 25; rating: Taxing
CBCC-DD05 + 99CC-DD65 + C9C8-0FD5 Start on Level 26; rating: Taxing
CBCC-DD05 + 91CC-DD65 + C9C8-0FD5 Start on Level 27; rating: Taxing
CBCC-DD05 + 95CC-DD65 + C9C8-0FD5 Start on Level 28; rating: Taxing
CBCC-DD05 + 96CC-DD65 + C9C8-0FD5 Start on Level 29; rating: Taxing
CBCC-DD05 + 9BCC-DD65 + C9C8-0FD5 Start on Level 30; rating: Taxing
CBCC-DD05 + 9CCC-DD65 + C9C8-0FD5 Start on Level 1; rating: Mayhe
CBCC-DD05 + 98CC-DD65 + C9C8-0FD5 Start on Level 2; rating: Mayhe
CBCC-DD05 + 9ACC-DD65 + C9C8-0FD5 Start on Level 3; rating: Mayhe
CBCC-DD05 + 92CC-DD65 + C9C8-0FD5 Start on Level 4; rating: Mayhem
CBCC-DD05 + 93CC-DD65 + C9C8-0FD5 Start on Level 5; rating: Mayhe
CBCC-DD05 + 9ECC-DD65 + C9C8-0FD5 Start on Level 6; rating: Mayhe
CBCC-DD05 + 1DCC-DD65 + C9C8-0FD5 Start on Level 7; rating: Mayhe
CBCC-DD05 + 1FCC-DD65 + C9C8-0FD5 Start on Level 8; rating: Mayhe
CBCC-DD05 + 14CC-DD65 + C9C8-0FD5 Start on Level 9; rating: Mayhe
CBCC-DD05 + 17CC-DD65 + C9C8-0FD5 Start on Level 10; rating: Mayhe
CBCC-DD05 + 10CC-DD65 + C9C8-0FD5 Start on Level 11; rating: Mayhem 
CBCC-DD05 + 19CC-DD65 + C9C8-0FD5 Start on Level 12; rating: Mayhe
CBCC-DD05 + 11CC-DD65 + C9C8-0FD5 Start on Level 13; rating: Mayhe
CBCC-DD05 + 15CC-DD65 + C9C8-0FD5 Start on Level 14; rating: Mayhe
CBCC-DD05 + 16CC-DD65 + C9C8-0FD5 Start on Level 15; rating: Mayhe
CBCC-DD05 + 1BCC-DD65 + C9C8-0FD5 Start on Level 16; rating: Mayhe
CBCC-DD05 + 1CCC-DD65 + C9C8-0FD5 Start on Level 17; rating: Mayhe
CBCC-DD05 + 18CC-DD65 + C9C8-0FD5 Start on Level 18; rating: Mayhe
CBCC-DD05 + 1ACC-DD65 + C9C8-0FD5 Start on Level 19; rating: Mayhe
CBCC-DD05 + 12CC-DD65 + C9C8-0FD5 Start on Level 20; rating: Mayhe
CBCC-DD05 + 13CC-DD65 + C9C8-0FD5 Start on Level 21; rating: Mayhe
CBCC-DD05 + 1ECC-DD65 + C9C8-0FD5 Start on Level 22; rating: Mayhe
CBCC-DD05 + 5DCC-DD65 + C9C8-0FD5 Start on Level 23; rating: Mayhe
CBCC-DD05 + 5FCC-DD65 + C9C8-0FD5 Start on Level 24; rating: Mayhe
CBCC-DD05 + 54CC-DD65 + C9C8-0FD5 Start on Level 25; rating: Mayhem
CBCC-DD05 + 57CC-DD65 + C9C8-0FD5 Start on Level 26; rating: Mayhe
CBCC-DD05 + 50CC-DD65 + C9C8-0FD5 Start on Level 27; rating: Mayhe
CBCC-DD05 + 59CC-DD65 + C9C8-0FD5 Start on Level 28; rating: Mayhe
CBCC-DD05 + 51CC-DD65 + C9C8-0FD5 Start on Level 29; rating: Mayhe
CBCC-DD05 + 55CC-DD65 + C9C8-0FD5 Start on Level 30; rating: Mayhe
CBCC-DD05 + 56CC-DD65 + C9C8-0FD5 Start on Level 1; rating: Sunsoft
CBCC-DD05 + 5BCC-DD65 + C9C8-0FD5 Start on Level 2; rating: Sunsoft
CBCC-DD05 + 5CCC-DD65 + C9C8-0FD5 Start on Level 3; rating: Sunsoft
CBCC-DD05 + 58CC-DD65 + C9C8-0FD5 Start on Level 4; rating: Sunsoft
CBCC-DD05 + 5ACC-DD65 + C9C8-0FD5 Start on Level 5; rating: Sunsoft