Responsible gambling
This page, and every operator it points to, is closed to anyone below the age of 18. For everyone else, the framing that matters is simple: treat a deposit as an evening out that has already been paid for, gone the second it clears. Money that has to cover rent, a power bill or a repayment has no business in a casino cashier.
Caps are worth setting while nothing is at stake, well ahead of any deposit and certainly not in the wake of a losing session. Every operator ranked here lets you cap what goes in, what can be lost and how long a session runs, from the account settings. A reduction applies on the spot. Any increase sits behind a waiting period, which is there for exactly the moment when you would rather it were not.
The warning signs are behavioural, not financial. Funding a deposit with borrowed money. Three sessions running that went longer than planned. Closing the laptop when someone walks in. The thought that one more round will bring the balance back to where it started. Each of those is a cue to trigger self-exclusion. You pick the length, the account shuts for that whole stretch, and asking nicely will not reopen it sooner.
Support across New Zealand costs nothing, stays private, and runs at every hour of the day. Gambling Helpline NZ takes calls on 0800 654 655 and also answers by text. The Problem Gambling Foundation of New Zealand runs counselling in person and online at no cost. Both work with partners, parents and flatmates as readily as with the person playing.