The Nintendo NES Classic Edition is now back in-stock at Target, Walmart and Toys "R" Us stores in limited supply. And adding more games in the palm-sized console is now doable via hackers' tools.

The miniaturized version of the Nintendo Entertainment System  was sold during the holidays and the supply was instantly depleted. The demand for the console was so high that Nintendo bore the brunt of criticisms for failing to meet customers' demands.

Now, a month after the holidays, the NES Classic console is now back in-stock in U.S. stores as revealed by GameStop. The palm-sized console hits the shelves of Target stores starting last Jan. 26. The device has been reported to be in stock in New York, New Jersey and Los Angeles.

However, the supply is again not as extensive with only one to 10 units on shelves in Target stores. The stocks in different branches vary depending on the size and location of the branch. The best place to find the NES Classic console will be a suburban Target store in close proximity to a big city.

The in-demand console is also available in Walmart according to i4u News. Toys "R" Us will also be having the NES Classic as indicated on its website. The page says that the stores are expecting shipments to come in and will soon be on display.

The Nintendo NES Classic Edition retails starting at $59.99, which is available online through GameStop. The retro console is pre-loaded with 30 classic oldie NES titles, which include "Super Mario Bros.," "Donkey King," "Pac-Man," "The Legend of Zelda," "Metroid" and "Kirby's Adventures."

Though Nintendo did not intend any games to be added, hackers were able to do it by connecting a USB cord in the power supply port, according to Polygon. The NES Classic modding tool  hakchi2 will enable gamers to add as much as 600 titles in the small console.