Cover
FT030s  10
FT035s   3 17 44
FT036s   5  7 57 72
FT037b0  4 19 35 38 52 53 55 56
FT037s   6 11 12 14 21 22 23 24 26 27 28 29 30 34 36 37 39 40 42 43 45 46 47 48 49 50 51 54 58 59 61 66 68
MCK      1  2  8  9 13 15 16 18 20 25 31 32 33 60 62 64 65 67 69 70 71
IT2NSF  41
Super   63

Original
FT026s  35
FT029s  26
FT035s  19 30 45
FT036s   9 13 22 27 43
FT037b0  1 41
FT037s   2  3  4  5  6  7  8 11 16 17 18 20 21 23 25 28 29 31 36 37 38 39 42 44 46 47 48
MCK     12 14 15 24 33
IT2NSF  10 34 40
HACK    32 (Metal Gear - Snake's Revenge)

        Engine                          Author          Cov / Orig
FT026s  FamiTracker 0.2.6 stable        jsr               0 +  1 =   1
FT029s  FamiTracker 0.2.9 stable        jsr               0 +  1 =   1
FT030s  FamiTracker 0.3.0 stable        jsr               1 +  0 =   1
FT035s  FamiTracker 0.3.5 stable        jsr               3 +  3 =   6
FT036s  FamiTracker 0.3.6 stable        jsr               4 +  5 =   9
FT037b0 FamiTracker 0.3.7 beta 0        jsr               8 +  2 =  10
FT037s  FamiTracker 0.3.7 stable        jsr              33 + 27 =  60
MCK     MCK/PMCK/PPMCK                  various          21 +  5 =  26
IT2NSF  IT2NSF                          mukunda           1 +  3 =   4
Super   SuperNSF                        mukunda           1 +  0 =   1
HACK    NES / NSF hacks                 ---               0 +  1 =   1
        Total                                            72 + 48 = 120