Nanite Systems has run an annual Treasure Hunt every year since 2015. In theory they are Halloween-themed and timed to coincide with October, but exigencies have sometimes caused them to be delayed until December.

The format of the treasure hunts see 3-4 items released each week. The hunt lasts for 4-5 weeks in total. Around half of hunt items are "reprints," that is, re-released versions of previous items. In most years the "grand prize" for the treasure hunt is a limited-edition main controller unit which is not available for purchase, although in one year we had batteries instead.