Konami discusses what was important to keep in moving Contra from 2D to 3D with Contra Rogue Corps

Contra: Rogue Corps is the latest installment in the Contra franchise, and while it's not the first to take things into 3D, it's certainly a deeper dive into the third dimension than previous installments. In an interview with DualShockers, executive producer Nobuya Nakazato explains what elements had to be kept from the series' classic 2D installments to make sure Rogue Corps felt like Contra.

What I wanted to keep from the other Contra games was that Contra has been easy to pick up, easy to control, and lets you have fun from the very beginning. You feel great when you are playing the game and shooting around at the enemies. That is something that we tried to keep when switching the game to 3D.