10. Guacamelee posters
9. Majora’s Mask in Link Between Worlds
8.Mario in Zelda OoT
7. NES games in Animal Crossing
6. Characters hidden in backgrounds of stages (Mortal Kombat,                          Street Fighter   4, etc.)
5.Grunt and RT conversations in Halo
4. Original level of Wolfenstein hidden in Wolfenstein: New Order
3: Luke Skywalker in the Wompa’s cave in Skyrim
2. Donkey Mong in Borderlands 2
1. Minecraft in Borderlands 2