The Terms of Service (link in Aileron's post) does not say anything about gambling/dicing.ToS is garbage, it's not even followed by OTM. For instance it talks about no gambling for real or in-game currency yet dicing is allowed.
It does however say this:
Seems like OTM is prepared when a time bomb hits CH and reverts everyone back to level 1.The entire risk associated with operation of the SOFTWARE PRODUCT is assumed by you. COMPANY does not warrant or assume responsibility for the accuracy or completeness of any information, text, graphics, links or other items contained within the SOFTWARE PRODUCT. COMPANY makes no warranties respecting any harm that may be caused by the transmission of a computer virus, worm, time bomb, logic bomb, or other such computer program.
