This is a Nonconsecutive Fillomino puzzle. In addition to the usual rules, two orthogonally adjacent cells may not contain consecutive numbers.
Part 3 of 4 in my half of the preview series for Fillomino-Fillia 2. See mathgrant’s blog for the other half.
Answer Entry: Enter the units digits (last digit) of the number in each circled cell starting with the leftmost column and going right.
Highlight to see answer: 62376777