Read our review of the Maxim88 SG. Since this is a new betting site, we have not come to any conclusion regarding its rating yet. . Maxim88 SG is a newly established online betting site, so it is still early to give its normal overall rating. To accurately gauge its rating. Read our review of the Maxim88 SG. Since this is a new betting site, we have not come to any conclusion regarding its rating yet.