The game is audited; the site you play it on is the real question
The short answer is that Tower Rush Original itself is legitimate, and the distinction between it and the clones trading on its name is where any safety check has to start. It is a Galaxsys title, its random number generation is audited by independent international testing laboratories, and every round is provably fair: the server seed, the client seed and the salt are exposed so a result can be recomputed after the fact. The maths is published as an RTP band of 96.12% to 97.00% with a fixed 100x ceiling, and there is no hidden switch that makes the game behave differently once you deposit.
The risk sits somewhere else entirely. A popular game attracts imitators, and the ones worth worrying about are not crude: cloned sites that copy an operator's layout to harvest deposits and logins, reskinned games that keep the artwork and replace the maths, and repackaged files circulated as mod or hacked builds. In all of those cases the game is not the problem. The place you found it is.
That makes the safety question practical rather than philosophical. Before any money moves, five checks take about ten minutes and rule out most of what can go wrong:
- Find the operator's licence details in the site footer and look the number up in the regulator's own public register. A badge is an image; a register entry is evidence.
- Open the game information panel and confirm the provider reads Galaxsys, the RTP falls inside 96.12% to 97.00% and the maximum multiplier reads 100x.
- Open the fairness panel. The server seed hash, the client seed and the salt should all be visible, and the client seed should be yours to change.
- Read the withdrawal terms before depositing, including the limits, which on standard accounts are typically $10,000 per transaction and $50,000 per month, and whatever verification the operator requires.
- Deposit the minimum, usually $10, and put a small withdrawal through the full process before committing anything larger.
Step five is the one people skip and the one that surfaces problems earliest. An operator that pays out a small withdrawal without drama has demonstrated more than any badge on its homepage.

Warning signs and what they usually mean
Three things that actually prove a build is genuine
How to check a site before you deposit