1. **Top 15 most popular 8-bit games:**
- Super Mario Bros.
- The Legend of Zelda
- Sonic the Hedgehog
- Pac-Man
- Metroid
- Donkey Kong
- Final Fantasy
- Super Mario Kart
- Kirby's Adventure
- Ninja Gaiden
- Super Mario RPG
- Mega Man 2
- Duck Hunt
- Galaga
- Frogger
2. **Top 20 most popular 16-bit Video Games:**
- Super Mario Bros.
- Tetris
- Street Fighter II
- Sonic the Hedgehog
- Star Fox
- Earthbound
- The Legend of Zelda: A Link to the Past
- Final Fantasy VI
- Kingdom Hearts: Birth by Sleep
- Super Smash Bros. Melee
- Super Metroid
- DOOM
- Spyro the Dragon
- Mega Man X
- Ultimate Mortal Kombat 3
- Final Fantasy
- Sonic & Knuckles
- Super Castlevania IV
- Super Monkey Ball
- Sonic the Hedgehog 2
3. **Popular Gaming Systems during the 8-bit and 16-bit era:**
- Nintendo Entertainment System
- Super Nintendo Entertainment System
- Atari 2600
- Intellivision
- ColecoVision
- Mega Drive
- MS-DOS
4. **Major Gaming Companies during the 8-bit and 16-bit era:**
- SEGA
- Atari
- Konami
