Release date: n.a.

This page collects games whose release year is not known, marked “n.a.” (not available) in the game facts. It currently holds one: Hole Hunter, a hammer-and-holes action game made in Taiwan in the early 1980s, in which you hit the rats that pop out of a field of holes before the clock runs out. The same game was sold in Europe as Topy and also turned up under other names, such as Mole Hunter.
You can play it below in your browser.