Nanostray 2 Codes -

Arcade mode stages:
As stages in Adventure mode are completed, the same stages will become unlocked in Arcade mode. Note: When you have the choice to pick one of multiple stages, choosing a particular stage will only unlock that one in Arcade mode.

Mini-games:
Complete the indicated Challenge Set to unlock the corresponding mini-game.

Nanobreak: Challenge Set A 
Nanogrid: Challenge Set D 
Nanorush: Challenge Set B 
Nanotorque: Challenge Set C 

Challenge Sets:
Complete the indicated task to unlock the corresponding Challenge Set.

Challenge Set B: Complete Challenge Set A 
Challenge Set C: Complete Challenge Set B 
Challenge Set D: Complete Challenge Set C