Topic: 2ds broken?

I haven't checked my 2ds in almost a year and when I turned it on it looked like it's all cracked and broken but there arent any scratches or cracks on it. Theres also black patches on it and colorful horizontal lines all over both screens

Sounds like something happened to it (it fell, got crushed, etc) and the screen cracked.

If it still works otherwise, you could get the screen replaced, or navigate the menus blind to perform a system transfer to a new unit.