#A70: Number City

 This genre can be compared to Tile City beyond semantics due to its incremental structure, but every aspect makes Number City less rigid, from the input type to carving the board yourself. In spite of this, the ruleset is tailored such that puzzles typically don't feel too loose. I especially like how the border rule is used in the context of this genre.

https://pzprxs.vercel.app/p?numcity/5/5/r4r9ttiig8e

https://pzprxs.vercel.app/p?numcity/12/12/l1l12p2j3i22m3zm3r5j21i3u2l2m5i25i2h3l2412rh08g48e412oh08g4be412000h0480fvsg040g05vvg08g2400

https://pzprxs.vercel.app/p?numcity/12/20/7-127k5efat-12t5n9zmc-10k7y1h1ic-14q-1425i1zn6bs1zg-114zmdg6b3dl4g0000000000000000000co9i36000000000000000000000000000000000000022198aa110000000000000000000