1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Ng5 Bc5 5.Nxf7 Bxf2+ 6.Kxf2 Nxe4+ 7.Kg1 Qh4
The alternative is 7...Qe7 and now we will look at three options for white.
a) 8.Nxh8 Qc5+ (8...d5 9.Bb5 [9.Qf3 Be6 10.Qe3 dxc4 is winning for white] 9...Bd7 10.Bxc6 Bxc6 is winning for white) 9.d4 Qxc4 10.c3 exd4 is winning for white.
b) 8.Bd5 Qc5+ (8...Rf8 9.Bxe4 Qxf7 10.Qf3 Qxf3 is winning for white) 9.d4 Qxd5 10.Nxh8 Qxd4+ is clearly better for white.
c) One game went 8.d4 Nxd4 9.Be3 Rf8 10.Nxe5 Nf5 11.Bd4 c5 12.c3 cxd4 13.cxd4 Ne3 14.Qb3 Nxc4 15.Qxc4 Nf2 16.Nc3 Nxh1 17.Nd5 Qd6 18.Nc7+ Kd8 19.Nxa8 b5 20.Nf7+ Rxf7 21.Qxf7 Qxd4+ 22.Qf2 0-1
White has at least two other options:
a) 8.Qf3 Nd4 (8...Qe1+ 9.Qf1 [9.Bf1 Rf8 10.Nc3 Rxf7 is winning for black] 9...Qxf1+ 10.Kxf1 Rf8 is slightly better for white) 9.Qe3 (9.Qf1 Rf8 10.Nc3 Ng5 is clearly better for black) 9...Nxc2 10.Qe2 Rf8 is slightly better for black.
b) There was a game which continued 8.Qf1 Rf8 9.d3 Nd6 10.g3 Qd4+ 11.Kg2 Nxc4 12.dxc4 Qe4+ 13.Qf3 Qxf3+ 14.Kxf3 Rxf7+ 15.Kg2 Nd4 16.Na3 b6 17.Re1 Bb7+ 18.Kh3 d6 19.c3 Nf3 20.Rf1 Kd7 21.Be3 Raf8 22.Rfd1 h5 23.c5 bxc5 24.Nc4 g5 25.g4 hxg4+ 26.Kg3 Rh7 27.Kxg4 Nxh2+ 28.Kg3 Rf3+ 29.Kg2 Rxe3+ 30.Kg1 Rg3+ 31.Kf2 Rg2+ 32.Ke1 Nf3+ 33.Kf1 Nd2+ 0-1
Worse is 8...Qf6 as 9.Qe1 (9.Qe2 Ng5 10.Nxg5 Qxg5 is winning for white) 9...Ng5 10.Nxg5 Qxg5 is winning for white.
White could try;
a) 9.d3 Rf8 10.hxg3 Qxg3 which is slightly better for white.
b) 9.hxg3 has been seen in practice, 9...Qxg3+ 10.Kf1 Rf8 11.Qh5 Na5 (better might be 11...d5 which has also been played: 12.Bxd5 Nd4 13.Qh2 Qg4 14.Qxe5+ Be6 15.Bxe6 Qf3+ 16.Kg1 Ne2+ 17.Kh2 Qf2+ 18.Kh3 Qf3+ 19.Kh2 Qf2+ 20.Kh3 Qf3+ 21.Kh4 Qf2+ 22.Kh5 Rxf7 23.Bxf7+ Kxf7 24.Rh2 Qf3+ 25.Kh4 g5+ 26.Qxg5 Rg8 27.Qh5+ Qxh5+ 28.Kxh5 Ng3+ 29.Kh4 Nf5+ 30.Kh5 Ng3+ 31.Kh4 ½-½) 12.Rh3 Qf4+ 13.Rf3 Qxc4+ 14.d3 Qd5 15.Nd6+ Ke7 16.Rxf8 Kxd6 17.Nc3 1-0
c) One game went 9.Qe1 Qxc4 10.Nxh8 Nxh1 11.Na3 Qd5 12.c4 Qf3 13.Nb5 d5 14.Nxc7+ Kd8 15.Nxa8 Bh3 16.Qh4+ Kc8 0-1
9...Nxh1 10.Qe2 d5.
The position is unclear but I think black is okayish. Play might continue as follows:
11.Bb5 Bh3 12.Bxc6+ bxc6 13.Kxh1 0-0-0 14.d3 Rxh8 15.Be3 d4 16.Bg1 Rf8 17.Nd2 Qf4=
Black has just enough compensation for his slight material deficit.