Thanks for your quick reply! I can provide with the photos of the cartdrige, as for the PCB I wouldn't know how to open it... It doesn't have any visible screws. The link I shared in my post contains the list of games.
Photos of the cart:
https://imgur.com/gallery/fTqqdY6
A video that reviews the cart:
https://www.youtube.com/watch?v=Jk5YGogSG6Y
And the list of games (from that page I posted earlier):
GAME LISTING:
01. Battle City ('90 levels) (Namco) *
02. Super Tank (Battle City, new levels) (Namco) *
03. Battle City (Namco) *
04. Arkanoid (Taito)
05. Tetris (Bullet Proof Software) *
06. Tetris (Tengen)
07. Star Soldier (Taxan)
08. Gradius (Konami)
09. Gyruss (Ultra)
10. Adventures of Dino Riki (Hudson Soft)
11. Twin Bee (Konami)
12. Star Soldier II (faster fire) (HudsonSoft)
13. Exerion (1989/no fuel) (Jaleco) *
14. Galaxian (Namco)
15. Galaga (Namco)
16. 1942 (Capcom)
17. Tiger Heli (Taito)
18. Sky Destroyer (Konami) *
19. Pinball (Nintendo)
20. Gyrodine (Taito)
21. Track & Field (Konami)
22. Power Soccer (Irem) *
23. Soccer (Nintendo)
24. Tag-Team Wrestling (Data East)
25. M.U.S.C.L.E. (Bandai)
26. Lunar Pool (Data East)
27. Baseball (Nintendo)
28. Golf (Nintendo)
29. Tennis (Nintendo)
30. F-1 Race (Nintendo) *
31. Road Fighter (Konami) *
32. Excitebike (Nintendo)
33. Lot Lot (Irem) *
34. Yie Ar Kung Fu (Konami) *
35. Karateka (Broderbund) *
36. Urban Chamipion (Nintendo)
37. Circus Charlie (Konami) *
38. Elevator Action (Taito)
39. Slalom (Nintendo/Rare)
40. Bomberman (Hudson Soft)
41. Soloman's Key (Tecmo)
42. Flipull (Taito) *
43. Moai-Kun (Konami) *
44. Othello
45. Mahjong (Nintendo) *
46. Spelunker (Broderbund)
47. Wrecking Crew (Nintendo)
48. Lode Runner (Broderbund)
49. Lode Runner II (Broderbund)
50. Binary Land (Hudson Soft) *
51. Mappy (Namco) *
52. Clu Clu Land (Nintendo)
53. Balloon Fight (Nintendo)
54. Dig-Dug (Namco)*
55. Dig-Dug II (Namco)
56. Chack'n Pop (Taito) *
57. Super Arabian (Sunsoft) *
58. Pac-Man (Namco)
59. Pac-Man II (faster) (Namco)
60. Pooyan (Konami)*
61. Super Mario Bros. (Nintendo)
62. Mario Bros. (Nintendo)
63. Fancy Mario Bros. (Weird gfx) (Nintendo)
64. Adventure Island (Hudson Soft)
65. The Goonies (Konami) *
66. The Legend of Kage (Taito)
67. Ice Climber (Nintendo)
68. Antarctic Adventure (Konami) *
69. Ninja Kun (Jaleco) *
70. Ninja Hattori Kun (Hudson Soft) *
71. Son Son (Capcom) *
72. Donkey Kong (Nintendo)
73. Donkey Kong JR. (Nintendo)
74. Donkey Kong 3 (Nintendo)
75. Popeye (Nintendo)
76. Devil World (Nintendo) *
77. Nuts & Milk (Hudson Soft) *
78. Astro-Robo Sasa (Ascii) *
79. Onyanko Town (Pony Cat) *
80. Field Combat (Jaleco) *
81. B-Wings (Data East) *
82. Mag-Max (FCI)
83. Macross (Namco) *
84. Exerion (Jaleco) *
85. Warpman (Namco) *
86. Formation Z (Jaleco)
87. Raid on Bungling Bay (Broderbund)
88. Star Force (Tecmo)
89. Xevious (Namco)
90. Front Line (Taito)
91. Mahjong 2 (Nintendo)
92. Wild Gunman (Nintendo)
93. Duck Hunt (Nintendo)
94. Hogan's Alley (Nintendo)
95. Super Dino-Riki 1 -alt levels (Hudson Soft)
96. Super Dino-Riki 2 -alt levels (Hudson Soft)
97. Super Dino-Riki 3 -alt levels (Hudson Soft)
98. Super Dino-Riki 4 -alt levels (Hudson Soft)
99. Super Pooyan (alt levels) (Konami)
100. Battle City (alt levels) (Taito)
100-190 = "Crazy" games = variations of originals
* = Japanese Famicom only games