+1!
ErvinLC: I notice that there is [...] a top career earnings leader board. What is the purpose of the actual dollar amount? Is that real money?
Nope. It's but a false reversion of the regular credits purchase. 1 USD buys you 100 credits, but it's not reversible. This is clear by WGT's T&Cs:
https://www.wgt.com/terms/
3. WGT Credits or Coins
[...]
WGT Credits do not have monetary or stored value or any credit balance
of real currency or its equivalent and are not redeemable for money at
any time.
The position of this leaderboard on the game's portal page give it special relevance.
Regarding criminal codes, terms like "deception" or "fraud" come into mind...