If you want a similar experience without legal issues:

Background and Purpose Flipnote Studio (originally Flipnote Studio for the Nintendo DSi) was an application released by Nintendo that allowed users to create short, frame-by-frame animations using the system’s stylus and touch screen, with simple drawing tools, onion-skinning, and sound recording. It inspired a generation of amateur animators and an active online sharing culture through Nintendo’s Flipnote Hatena service (and later Flipnote Gallery on the DSi). When the official services were discontinued, much fan interest remained in keeping Flipnote-style creation alive on handheld hardware.

Another incredible resource is the (archive.sudomemo.net), which stores an enormous collection of over 12 terabytes of Flipnotes from the original DSi era. This archive is a treasure trove of internet history, preserving millions of short animations from the late 2000s and early 2010s.

rather than a retail cartridge, you can still download the ROM to use on original hardware or emulators.

is a 2D animation software developed by Nintendo EAD Tokyo for the Nintendo DSi Go to product viewer dialog for this item.

An active fan-made online community that acts as a replacement for the old Flipnote Hatena, allowing you to share your animations with others. Conclusion

To run Flipnote Studio on a computer or smartphone, you will need a Nintendo DS/DSi emulator.